04:53 <Curie> arXiv.org | Joint Model-independent Constraints on the Post-Newtonian Parameter and Cosmic Curvature from Galaxy-scale Strong Lensing, SNe Ia, BAO, and Cosmic Chronometers Fu-you Zheng, Xiao-jun Gao, Hou-bing Tang, Wei Xiang · 4h ago · 3 min read This investigation aims to test the validity of general relativity (GR) on kiloparsec scales via galaxy-scale strong gravitational lensing (SGL) combined with multiple cosmological probes. To circumvent the circularity problem induced by the presumption of a cosmological model based on GR, we apply the distance sum rule in the Friedmann-Lemaitre-Robertson... Read full story

04:53 <Curie> arXiv.org | Color-Kinematics Duality and the Double Copy in Curved Spacetimes Mariana Carrillo Gonz\'alez · 4h ago · 3 min read The double copy relates gravitational data to gauge-theory data, most sharply through color-kinematics duality for flat-space scattering amplitudes. This review surveys the extent to which this idea can be formulated beyond asymptotically flat backgrounds. After recalling the flat-space ingredients needed for comparison, we describe curved-space construct... Read full story

04:53 <Curie> arXiv.org | Gravitational wave echoes as probes of the maximum mass of strange stars in quadratic curvature-matter coupled gravity 4h ago · 3 min read Gravitational wave astronomy provides a powerful avenue for probing exotic compact stars. Recent analyses of GW170817 have reported possible post-merger gravitational wave echoes with a significance of $4.2σ$ and a dominant frequency near $72,\text{Hz}$. Such echoes may arise from ultracompact remnants possessing photon spheres that partially trap gravita... Read full story

04:53 <Curie> arXiv.org | Particle production from bubble collisions Anish Ghoshal, Pratyay Pal, Alessandro Strumia · 4h ago · 3 min read Collisions of ultra-relativistic bubbles during cosmological phase transitions can produce particles much heavier than the transition scale. Previous analyses modelled this process as the off-shell decay of the scalar background. We show that its results parametrically overestimate hard particle production and depend on the gauge choice and the coordinate... Read full story

04:53 <Curie> arXiv.org | Fire at the Tip of the Throat: Hagedorn Phase after brane-antibrane inflation? Dibya Chakraborty, Ahmed Rakin Kamal · 4h ago · 3 min read We study the post-inflationary open-string Hagedorn phase in perturbatively moduli stabilized brane-antibrane inflation. In this class of models, the volume modulus is stabilized by perturbative corrections rather than by non-perturbative effects to the superpotential, thereby avoiding the standard brane-antibrane $η$-problem. Since inflation ends through... Read full story

04:53 <Curie> arXiv.org | Real versus Complex Fermion Bare Mass and Multi-Wall String Defect Annihilation Utsav Atta, Tathagata Ghosh, Sudip Manna · 4h ago · 3 min read Particle physics models beyond the Standard Model often contain global symmetries to address various unanswered questions. However, a common criticism of theories based on global symmetries is that such symmetries are generally expected to be explicitly violated by gravitational effects at the Planck scale. In the case of a global $U(1)$ symmetry, this ex... Read full story

04:53 <Curie> arXiv.org | The Instrumented Baffle at the Input Mode Cleaner of Advanced Virgo Plus: Four years of Successful Operation as a Monitor of Stray Light 4h ago · 3 min read The suspended end mirror of the Input Mode Cleaner cavity in the Advanced Virgo Plus interferometer was equipped with an instrumented baffle in Spring 2021, serving as a demonstrator of the technology in preparation for the installation of large instrumented baffles in the main arms of the interferometer. This baffle includes tens of sensors positioned ne... Read full story

04:53 <Curie> arXiv.org | Fermion scattering in a Bose-Einstein condensate 4h ago · 3 min read In a recent work, we considered the propagation of fermions in the background of a scalar Bose-Einstein (BE) condensate. Using some illustrative Yukawa-type coupling models between the fermions and the scalar fields, we determined the dispersion relations of the fermions and the scalar modes in various models. To complement that work, here we consider the... Read full story

04:53 <Curie> arXiv.org | Metastable cosmic strings are broken at the start 4h ago · 3 min read We show that metastable cosmic strings break at early times, either via finite-temperature effects or by attaching to pre-existing monopoles during network percolation. The resulting segments can be initially super-horizon in size and thus persist for a significant amount of time. If the strings do not re-percolate, the network's eventual destruction is t... Read full story

04:53 <Curie> arXiv.org | Prominence: A discriminator of gravitational wave signals Jo\~ao Gon\c{c}alves, Danny Marfatia, Ant\'onio P. Morais · 4h ago · 3 min read The concept of prominence is familiar to signal engineers, topographers and mountaineers. We introduce Prominence $\cal P$ as a discriminator of gravitational wave (GW) signals. We treat black hole and neutron star binaries as astrophysical background sources, and show how $\cal P$ can be used to distinguish between GW spectra produced by first-order phas... Read full story

04:57 <Curie> NASA Science | Antarctic Sea Ice Grows to Its 2026 Maximum Michala Garrison · 57m ago · 4 min read The ice reached its third-lowest maximum extent since satellite observations began. Read full story

04:57 <Curie> NASA Science | APOD: 2026 October 12 - Jupiter and the Moons Jerry Bonnell · 52m ago · 1 min read APOD Science APOD APOD: 2026 October 12 –… Today’s APOD Archive Submissions Index Search Calendar RSS Education About Discuss APOD Astronomy Picture of the Day Discover the cosmos! Each day a different image or photograph of our fascinating universe is featured, along with a brief explanation written by a professional astronomer. Jupiter and the […] Read full story

05:33 <Curie> arXiv.org | Scalar nonstandard neutrino interactions in galactic supernovae 5h ago · 3 min read We analyze the prospects for studying scalar nonstandard interactions (SNSI) using the neutrino burst from a galactic supernova (SN). SNSI modifies the resonant flavor conversion and, correspondingly, the neutronization burst signal, and may be identifiable in future multi-tonne-scale experiments, such as Deep Underground Neutrino Experiment (DUNE). Notab... Read full story

05:33 <Curie> arXiv.org | Neutrino Telescope Event Classification on Quantum Computers 5h ago · 3 min read Quantum computers represent a new computational paradigm with steadily improving hardware capabilities. In this article, we present the first study exploring how current quantum computers can be used to classify different neutrino event types observed in neutrino telescopes. We investigate two quantum machine learning approaches, Neural Projected Quantum ... Read full story

05:33 <Curie> arXiv.org | Looking for WIMPs through the neutrino fogs 5h ago · 3 min read We revisit the expected sensitivity of large-scale xenon detectors to Weakly Interacting Massive Particles (WIMPs). Assuming current primary noise sources can be mitigated, we find that with the present discrimination power between nuclear and electron recoils, the experimental sensitivity is limited not only by atmospheric neutrinos' nuclear recoils (''n... Read full story

05:33 <Curie> arXiv.org | Rotation period of the O giant xi Persei: Coexistence of cyclic and periodic variability. A weakly magnetic candidate star H. F. Henrichs, N. P. Sudnik, A. David-Uraz · 5h ago · 4 min read OB stars exhibit line profile variability, often associated with rotation; notably, in their UV wind-sensitive lines where discrete absorption components tend to recur cyclically. We searched for periodicity in spectral regions of the O7.5III(n)((f)) star xi Persei formed very close to the star. The NIV 1718 A line was identified as the most uncontaminate... Read full story

05:33 <Curie> arXiv.org | Investigating the nature of magnetic turbulence in Tycho's SNR using X-ray observation 5h ago · 3 min read Supernova remnants (SNRs) are widely regarded as the primary sources of Galactic cosmic ray acceleration and the particles are energized at the shock front of SNRs through the diffusive shock acceleration (DSA) mechanism, gaining energy by repeatedly crossing the shock. Magnetic turbulence plays a crucial role in scattering these particles back and forth,... Read full story

05:33 <Curie> arXiv.org | Mass Proxy Quality of Halo Properties in IllustrisTNG and FLAMINGO Simulations: II. Galaxies, Stars, and Black Holes Eddie Aljamal, August E. Evrard, Arya Farahi, Dylan Nelson · 5h ago · 3 min read We study the stellar, black hole, and satellite galaxy populations of group- and cluster-scale halos in the IllustrisTNG, TNG-Cluster, and FLAMINGO cosmological hydrodynamical simulations. We characterize the mass-conditioned scaling relations, covariance, conditional likelihoods, and mass proxy quality (MPQ) of integral properties within $R_{\rm 500c}$: ... Read full story

05:33 <Curie> arXiv.org | The GAPS Programme at TNG. LXXX. Characterisation of the 400 Myr old multi-planet system K2-233 5h ago · 3 min read Understanding exoplanet physical properties is crucial for characterising their atmospheres and internal composition. Precise planetary masses are essential for constraining bulk densities and interiors, particularly in young systems hosting planets within or near the radius valley, where atmospheric mass loss may strongly shape their evolution. Here we r... Read full story

05:34 <Curie> arXiv.org | An LSST-DESC Precursor Project: Hyper Suprime-Cam Year 1 $3\times2$pt in Harmonic Space 5h ago · 3 min read We present the first fully photometric joint analysis of weak gravitational lensing and galaxy clustering (3$\times$2pt) in harmonic space with LSST-DESC analysis pipelines applied to Hyper Suprime-Cam Year 1 (HSC Y1) data. The HSC Y1 dataset, with imaging depth and galaxy number density similar to those expected for the first year of LSST observations, i... Read full story

05:34 <Curie> arXiv.org | Breaking the Blend: A multi-tracer kinematic decomposition method for IFS data applied to disentangling the AGN outflow and circumnuclear ring in NGC 5728 with JWST 5h ago · 4 min read Integral field spectroscopy (IFS) of the central kiloparsecs of active galactic nuclei (AGN) reveals a mixture of spatially coincident emission from star-formation and AGN feedback exciting the interstellar medium. Disentangling these components remains a challenge, as most spectral tracers are affected by both processes, limiting robust interpretation of... Read full story

05:34 <Curie> arXiv.org | Reconstructing Early Primordial Black Hole Domination from Gravitational-Wave Backgrounds Daniel del-Corral, Angus Spalding · 5h ago · 3 min read Primordial Black Holes (PBHs) with masses below $\mathcal{O}(10^9)$g occupy an interesting region of parameter space that is largely inaccessible to conventional observations. Despite evaporating before Big Bang Nucleosynthesis (BBN), these PBHs can naturally generate a period of early matter domination in the early Universe. A primordial gravitational-wa... Read full story

05:34 <Curie> arXiv.org | Optical Depths from the Thermal Sunyaev-Zel'dovich Effect with ACT DR6 and DESI DR1 Spectroscopic Galaxies and Optically-Selected Clusters 5h ago · 5 min read We present stacked thermal Sunyaev-Zel'dovich (tSZ) effect measurements for three samples of galaxy groups and clusters: those traced by the Dark Energy Spectroscopic Instrument Data Release 1 (DESI DR1) luminous red galaxies (LRG) and the DESI DR1 Bright Galaxy Sample (BGS), and an eROMaPPer optically-selected sample from the DESI Legacy Imaging Survey. ... Read full story

05:34 <Curie> arXiv.org | Carbon in J0815+4729: Casting a shadow of doubt on the interpretation of CH absorption in the most primitive stars 5h ago · 3 min read Aims. We revisit the carbon abundance in the primitive iron-poor star J0815+4729 ([Fe/H] = -5.49). J0815+4729 is so carbon-enhanced and oxygen-rich that, in addition to CH and C2 molecular lines, weaker neutral atomic transitions are measurable in its spectrum, providing a unique opportunity to explore the line formation of C I and O I transitions in such... Read full story

05:34 <Curie> arXiv.org | The PSR J0435+3233 Triple System 5h ago · 4 min read The detailed evolution of triple star systems is complicated and poorly known. Using archived optical/infrared and $γ$-ray data, we identified the pulsar PSRJ0435+3233 as a $γ$-ray pulsar in a hierarchical triple system, with a helium white dwarf (WD) as a close inner binary companion and a Sun-like star as the distant tertiary. PSRJ0435+3233 and the WD... Read full story

05:35 <Curie> arXiv.org | Infrared spectroscopy of gas-phase hydrogenated and methylated pyrenes: from laboratory spectra to the simulated 3.4 $μ$m emission band 5h ago · 3 min read Observations of the aromatic infrared emission band at 3.3 mic often reveal satellite emission features in the 3.4 - 3.6 mic range. While the 3.3 mic band is attributed to the CH stretching vibration of polycylic aromatic hydrocarbons (PAHs), the satellite bands - particularly its prominent 3.4 mic component - is assigned to aliphatic CH stretching vibrat... Read full story

05:35 <Curie> arXiv.org | The FAST HI 21-cm Absorption Blind Survey. III. OH Absorption Search in the 21-cm Absorber Sample and Continued HI Absorption Search 5h ago · 4 min read We present the first blind search for OH 18-cm absorption with the Five-hundred-meter Aperture Spherical Telescope (FAST), conducted alongside the HI 21-cm absorption search. Our previous FAST blind HI absorption search identified 34 systems. In this work, we extend the search using 2024 and part of the 2025 CRAFTS and FASHI data (394.4 hr and 1622.1 deg$... Read full story

05:35 <Curie> arXiv.org | Search for double-line spectroscopic binaries in RAVE survey Mikhail Kovalev (YNAO) · 5h ago · 2 min read I present a study for double-line spectroscopic binaries content in RAVE DR6 spectra, using composite spectral model. Three complementing selections found 2813 composite spectra, belonging to 2605 unique targets. Also these results were compared with automatic classification based on t-SNE map, which shows good agreement. Additionally I identified several... Read full story

05:35 <Curie> arXiv.org | HAMCOR: A physics-driven Hamiltonian framework for inferring AGN coronal geometry from X-ray reverberation lags Fabio Buffoli · 5h ago · 3 min read We present HAMCOR (Hamiltonian-based AGN Multi-constraint CORonal inference framework), a geometry-agnostic method for inferring the X-ray coronal structure of accreting black holes using reverberation-lag measurements. Unlike conventional template-fitting approaches, HAMCOR reframes coronal geometry inference as the ground-state selection of a physical H... Read full story

05:35 <Curie> arXiv.org | Statistical Field Theory for Weak Gravitational Lensing Zheng Zhang, Philip Bull, Chris Clarkson, Andrina Nicola · 5h ago · 3 min read Standard weak-lensing calculations treat lensing as a linear remapping of the matter field along the line of sight. We instead formulate lensing as a stochastic field theory for the Sachs optical scalars, driven by random Ricci-focusing and Weyl-shearing fields. With convergence and shear expressed linearly in the Sachs-scalar fluctuations, the resulting ... Read full story

05:35 <Curie> arXiv.org | Fast Astronomical Transients in Archival Photographic Plates: Using optical aberrations as a tool for discerning real images, from plate artifacts Ivo Busko · 27d ago · 3 min read The detection of fast astronomical transients in photographic plates from the Palomar sky surveys conducted in the 1950s, was subject to the criticism that such transients could be just the effect of otherwise unaccounted for plate artifacts. In this paper, we show that transient images exhibit the coma aberration pattern expected from off-axis point sour... Read full story

05:35 <Curie> arXiv.org | Reduced incidence of little red dots at z < 3 based on number density and halo mass evolution 5h ago · 3 min read An intriguing puzzle in extragalactic astronomy is the scarcity of Little Red Dots (LRDs) at $z 4$ but shift to more typical galaxy environments at $z \sim 3.5$. Concurrently, cross-correlation analyses show that their dark matter halo masses grow rapidly, from $\lesssim 10^{10.1} \, M_{\odot}$ at $z \sim 7.5$ to $\sim 10^{11.3} \, M_{\odot}$ at $z \sim 3... Read full story

05:38 <Curie> arXiv.org | Hybrid neutron stars among mass gap objects are excluded by twin stars at $1.4\,M_\odot$ 5h ago · 3 min read We investigate the question whether compact objects in the so-called mass gap ($2.5 < M/M_\odot < 5.0$) can be neutron stars or hybrid stars. Using a generic hybrid star equation of state with a first-order deconfinement transition, we map the allowed parameter space in a Seidov-type diagram and confront it with modern mass-radius constraints. We find tha... Read full story

05:38 <Curie> arXiv.org | Observing the Peculiar Acceleration of our Solar System with Quasar Proper Motions Phu Huy Nguyen, Calum Murray · 5h ago · 3 min read We measured the proper motion dipole of quasars observed by \textit{Gaia} to determine the acceleration of the Solar System with respect to the quasar rest frame. We characterised the full angular power spectrum of the proper motion field using the pseudo-$C_\ell$ formalism and employed simulation-based inference to jointly constrain the dipole and higher... Read full story

05:38 <Curie> arXiv.org | Exploring non-Poisson satellite occupation in HOD models and its impact on 2- and 3-point galaxy clustering Antoine Rocher · 5h ago · 3 min read Understanding the connection between galaxies and dark matter halos is a central challenge in modern cosmology. The Halo Occupation Distribution (HOD) framework provides a widely used statistical description of how galaxies populate dark matter halos, enabling precise modelling of galaxy clustering. A common assumption in standard HOD models is that the n... Read full story

05:38 <Curie> arXiv.org | Inpainting to search for premerger massive black hole binaries in realistic LISA datasets Gareth Cabourn Davies, Ian Harry · 5h ago · 3 min read A key science target of the Large Interferometer Space Antenna (LISA) is to carry out multi-messenger observations of massive black hole binaries, observing the merger simultaneously in gravitational waves and with electromagnetic observatories. Identifying that a merger is happening and providing an updating estimate of the sky location in the hours, day... Read full story

05:38 <Curie> arXiv.org | The PLATO Input Catalogue of targets (tPIC) for the first Long Pointing Field 5h ago · 4 min read The ESA PLAnetary Transits and Oscillations of stars (PLATO) mission is designed to detect terrestrial planets in the habitable zones of solar-type stars. Owing to telemetry constraints, the selection of PLATO targets must be performed in advance. We present the first public release of the PLATO Input Catalog of targets (tPIC2.2), which provides the list ... Read full story

05:38 <Curie> arXiv.org | Why Stellar Sequences Turn Over: Fixed Points, Instability, and Equation-of-State Universality Isaac Legred, Nicolas Yunes · 5h ago · 3 min read We reformulate the stellar structure equations in the language of dynamical systems and show that the maximum mass of stellar sequences arises from the existence of a fixed point in the relativistic regime. In an appropriate representation of the Tolman-Oppenheimer-Volkoff equations, this fixed point becomes manifest and is directly associated with the tu... Read full story

05:38 <Curie> arXiv.org | Primordial Black Hole interpretation of the subsolar merger event S251112cm Md Riajul Haque, Fabio Iocco, Luca Visinelli · 5h ago · 3 min read The LIGO-Virgo-KAGRA (LVK) candidate event S251112cm suggests that at least one component has a subsolar mass. Since such objects cannot be produced through standard stellar evolution, this observation provides a possible indication of nonstandard formation channels. Primordial black holes (PBHs), formed from the collapse of primordial density fluctuation... Read full story

05:38 <Curie> arXiv.org | ID-MAGE II: The Star Forming Satellites of Low-Mass Hosts 5h ago · 3 min read We present results from our ongoing campaign to follow up the satellite candidates from the Identifying Dwarfs of MC Analog GalaxiEs (ID-MAGE) survey. Previously, we published a list of 355 unresolved satellite candidates identified around 36nearby LMC- and SMC-mass hosts (D$=$4$-$10Mpc). We present the velocities of 83 satellite candidates from new Gre... Read full story

05:38 <Curie> arXiv.org | Selection--Clustering Coupling and Pair-Midpoint Anisotropy from Observer Motion 5h ago · 3 min read Observer motion couples source selection, clustering, and estimator normalization in cosmological pair statistics. Existing calculations distinguish the source-count dipole from the modulation of clustering, including selection-dependent bias. We develop an observable-level formulation that retains arbitrary marked pair kernels, nonfactorizable pair inclu... Read full story

05:38 <Curie> arXiv.org | A possible detection of gas rotation in galaxy groups via the kinetic Sunyaev-Zeldovich effect 5h ago · 3 min read We utilise the kinetic Sunyaev-Zeldovich effect (kSZ) to measure the rotation of ionised gas within galaxy groups defined in the SDSS-DR7 galaxy sample, via their dipolar imprint on the cosmic microwave background (CMB). We estimate the direction of the projected angular momentum for each of our selected fast-rotating groups by measuring the redshift dipo... Read full story

05:39 <Curie> arXiv.org | A Unified Scalar-Field Mechanism for the $H_0$, $S_8$ and Evolving Dark-Energy Tensions Gerasimos Kouniatalis · 5h ago · 3 min read We propose a unified scalar-field framework that addresses, within standard general relativity, three current cosmological anomalies: the $H_0$ tension, the mild preference for reduced late-time clustering ($S_8$), and recent indications of evolving dark energy. The model contains a single minimally coupled canonical scalar field evolving in a smooth pote... Read full story

05:39 <Curie> arXiv.org | Far-infrared Polarization Properties of Nearby Star-forming Regions: A New Compendium of SOFIA/HAWC+ Observations Kaitlyn Karpovich, Susan E. Clark, Enrique Lopez-Rodriguez · 5h ago · 3 min read We present a comprehensive polarimetric study of 26 nearby molecular clouds in four far-infrared bands (53 $μ$mto 214$μ$m) using 52 archival SOFIA/HAWC+ datasets{, over half of which are unpublished}. Far-infrared dust polarization observations probe the plane-of-sky magnetic field. To investigate scale-dependent trends, we group the molecular clouds by... Read full story

05:39 <Curie> arXiv.org | On the relation between magnetic field strength and gas density in the interstellar medium. II. Density uncertainties and diffuse gas constraints 5h ago · 3 min read The relationship between magnetic field strength and gas density is essential to understand the interstellar medium and star formation. Zeeman measurements in dense atomic and molecular gas phases have traditionally been used to directly probe magnetic field strengths in the Milky Way. This allowed derivation of a relationship between magnetic field stren... Read full story

05:39 <Curie> arXiv.org | The many boundaries of the stratified dark matter halo Jiaxin Han (SJTU) · 5h ago · 3 min read We review the physics of halo collapse giving rise to various halo boundaries, as well as their identification, observation, and applications. The classical halo is typically defined as a monolithic, virialized object enclosed within its virial radius -- a definition which, however, does not account for ongoing halo growth. Continuous accretion causes the... Read full story

05:39 <Curie> arXiv.org | Search for Gamma-ray emission from Abell 119 galaxy cluster using INTEGRAL/ISGRI, COMPTEL, and DAMPE data Siddhant Manna, Shantanu Desai · 5h ago · 3 min read We present a comprehensive search for non-thermal high-energy $γ$-ray emission from the nearby merging galaxy cluster Abell119 ($z=0.044$) using archival observations spanning over seven decades in photon energy. Our analysis combines hard X-ray data from INTEGRAL/ISGRI (30--100keV), MeV $γ$-ray observations from COMPTEL (0.75--30~MeV), and GeV--TeV dat... Read full story

05:39 <Curie> arXiv.org | From cosmological simulations to binary black hole mergers: The impact of using analytical star formation history models on gravitational-wave source populations 5h ago · 4 min read Observations of binary black hole (BBH) mergers provide a unique window into the lives of massive stars across cosmic time. Connecting redshift-dependent merger properties to massive star progenitors requires accurate models of cosmic star formation and chemical enrichment histories. Analytical fits for the metallicity-specific cosmic star formation rate ... Read full story

05:39 <Curie> arXiv.org | Radio streaks in the Lighthouse Nebula discovered with MeerKAT -- Particles escaping from the tail and illuminating the ambient magnetic field 5h ago · 4 min read Bow-shock pulsar wind nebulae are valuable sources for investigating the dynamics of relativistic pulsar winds and the mechanisms by which they produce cosmic-ray leptons at the highest energies. The Lighthouse Nebula is one such object, famous for the high velocity of its pulsar and its long, misaligned X-ray jet, which may provide a specific escape chan... Read full story

05:39 <Curie> arXiv.org | A Star's Death by a Thousand Cuts: The Runaway Periodic Eruptions of AT2023uqm 5h ago · 4 min read Stars on bound orbits around a supermassive black hole may undergo repeated partial tidal disruption events (rpTDEs), producing periodic flares. While several candidates have been suggested, definitive confirmation of these events remains elusive. We report the discovery of AT2023uqm, a nuclear transient that has exhibited at least five periodic optical f... Read full story

05:39 <Curie> arXiv.org | Limb Asymmetries on WASP-39b: A Multi-GCM Comparison of Chemistry, Clouds, and Hazes 5h ago · 4 min read With JWST, observing separate spectra of the morning and evening limbs of hot Jupiters has finally become a reality. The first such observation was reported for WASP-39b, where the evening terminator was observed to have a larger transit radius by about 400 ppm and a stronger 4.3 $μ$m CO$_2$ feature than the morning terminator. Multiple factors, including... Read full story

05:40 <Curie> arXiv.org | KSZ Velocity Reconstruction with ACT and DESI-LS using a Tomographic QML Power Spectrum Estimator Anderson C. M. Lai, Yurii Kvasiuk, Moritz M\"unchmeyer · 5h ago · 3 min read We perform kinetic Sunyaev-Zel'dovich (kSZ) velocity reconstruction on data from ACT DR6 and DESI-LS DR9. To estimate the cross-power between kSZ velocity reconstruction and galaxy density, we make use of a novel quadratic maximum likelihood (QML) power spectrum estimator in redshift binned spherical coordinates. We find a detection of the kSZ signal from... Read full story

06:49 <Curie> Live Science | 'It could have been a very different history': Researchers are finally starting to pin down how many Indigenous people were living in the Americas when Columbus arrived Kristina Killgrove · 49m ago · 9 min read Archaeologists and geographers have been trying to estimate the pre-1492 population of the Americas for decades. But it's difficult. Read full story

09:42 <Quasar> ScienceDaily | Scientists discover a hidden factor that can make or break chemical reactions 7h ago · 12 min read Researchers discovered a hidden factor that can determine whether chemical reactions succeed or fail, and then used it to boost the proportion of the desired product from 16% to 97%. By controlling acidity near electrodes, they developed a promising way to manufacture chemicals for plastics, medicines, and other products using oxygen and electricity inste... Read full story

09:42 <Quasar> ScienceDaily | NASA spots a giant patch of Moon-like rock on Earth 22h ago · 7 min read An astronaut aboard the International Space Station photographed a remarkable formation in Madagascar that looks surprisingly similar to the Moon’s bright highlands. Made of anorthosite, a rock abundant on the lunar surface, the formation dates back at least 600 million years and bears the scars of ancient continental collisions. Read full story

09:42 <Quasar> ScienceDaily | New injection makes fat cells self-destruct 22h ago · 10 min read Scientists have developed an experimental injection that destroys fat cells and significantly reduces dangerous belly fat, potentially opening a new path to treating obesity. Early research also suggests it could help prevent the weight regain that often follows stopping popular weight loss drugs like Ozempic and Wegovy. Read full story

09:43 <Quasar> ScienceDaily | The hidden math of Alzheimer's could point to new treatments 18h ago · 6 min read Mathematics may hold unexpected clues to understanding Alzheimer’s disease. Scientists have developed a model showing how common metals like copper and zinc may influence the buildup of proteins associated with the disease, while also exploring possible ways to stop the process. The findings could help researchers identify promising strategies for prevent... Read full story

09:43 <Quasar> ScienceDaily | Scientists discover why a 100-year-old mushroom disease won't go away 17h ago · 7 min read Scientists have uncovered a surprising secret behind a mushroom disease that has frustrated growers for more than a century: It involves more than 17 species of harmful bacteria, not just one. The discovery could explain why treatments have struggled to stop the disease and open the door to more effective, eco-friendly solutions. Read full story

09:43 <Quasar> ScienceDaily | Just 10 minutes of daily exercise could unlock deeper sleep 12h ago · 9 min read Getting better sleep might be as simple as moving a little more every day. Researchers at The University of Texas at Austin found that people who exercised more frequently experienced more deep, restorative sleep, which is essential for brain recovery, memory, and emotional well-being. Surprisingly, just 10 minutes of moderate to vigorous exercise per day... Read full story

09:43 <Quasar> ScienceDaily | Scientists make stunning discovery that could help explain why life exists 21h ago · 10 min read Scientists have discovered that the universe's fundamental physical constants may be finely balanced to make life possible. Even tiny changes to these constants could make liquids too thick or too thin for essential biological processes, potentially preventing life as we know it. Surprisingly, these life-friendly conditions existed billions of years befor... Read full story

09:43 <Quasar> ScienceDaily | Scientists discover vanilla’s hidden healing potential 9h ago · 7 min read Scientists have discovered that vanillin, the compound that gives vanilla its distinctive flavor, has powerful properties that could help fight infections, reduce inflammation, and promote wound healing. The inexpensive, widely available ingredient could one day become an important component of advanced wound treatments and regenerative medicine. Read full story

10:51 <Curie> Live Science | Inuit figurine: A 700-year-old Indigenous carving of a European made a century before Columbus Kristina Killgrove · 51m ago · 3 min read This Inuit carving was made a century before Columbus set foot in the Americas and likely depicts a Norseman. Read full story

10:51 <Curie> Live Science | 7 extraordinary Indigenous sites in the US, from Chaco Canyon to Chimney Rock Tom Metcalfe · 21m ago · 6 min read The Native Americans built impressive sites across what is now the U.S., including Walnut Canyon and Cahokia. Read full story

14:25 <Curie> Live Science | 1,200-year-old burial in Latvia holds people who died of 'sharp force' injuries, possibly from a Viking raid Tom Metcalfe · 25m ago · 5 min read A 1,200-year-old burial in Latvia holds the remains of a father, son and four others, a group that may have been victims of Viking raid. Read full story

14:26 <Quasar> Quanta Magazine | Is ‘Attention’ the Essence of Intelligence? Natalie Wolchover · 6m ago · 12 min read A mathematical mechanism enables AI models to process language at scale, undergirding the current AI revolution. Our columnist asks: Why is attention the key? Read full story

14:28 <Quasar> Space | What is 'Ray Gunn,' the animated neo-noir sci-fi film from 'The Incredibles' director Brad Bird? Jeff Spry · 5d ago · 4 min read The first trailer has launched for Netflix’s hard-boiled futuristic thriller, and we’re totally on board! Read full story

14:28 <Quasar> Space | On this day in space! Oct. 6, 1992: US and Russia sign human spaceflight agreement for joint missions to Mir space station Hanneke Weitering · 5d ago · 3 min read This historic US-Russian partnership for trips to and from the Mir space station set the stage for the International Space Station of today. Read full story

14:28 <Quasar> Space | South Korea launches Nuri rocket carrying 15 satellites, its 1st liftoff of 2026 (photo) Mike Wall · 5d ago · 3 min read Almost everything went well on the flight, which was the fifth to date for Nuri. Read full story

14:28 <Quasar> Space | This Best Buy deal gets you a huge $428 off the Canon EOS R8 Harry Bennett · 5d ago · 5 min read Best Buy is currently offering the Canon EOS R8 for $1,220, which is $28 cheaper than Amazon's Prime Day price. It has a 24MP sensor and good astro capability. Read full story

14:28 <Quasar> Space | Can we protect historic sites on the moon from the coming lunar rush? Leonard David · 5d ago · 7 min read "The moon is part of the cultural landscape of Earth." Read full story

14:28 <Quasar> Space | This tiny telescope is "affordable astrophotography defined" Chris McMullen · 5d ago · 5 min read And now even cheaper with $60 off in Amazon's Prime Big Deal Days sale, this super-portable telescope is a steal but stock is limited. Read full story

14:28 <Quasar> Space | Astronomers detect most distant supermassive black hole-powered blazar ever: a cosmic beacon from the dawn of time Robert Lea · 5d ago · 3 min read "Around 11 billion years ago, the universe experienced a period of peak activity known as the 'Cosmic noon,' characterized by an intense rate of star and galaxy formation." Read full story

14:28 <Quasar> Space | Study the stars at home, this star projector is at its lowest-ever price Chris McMullen · 5d ago · 5 min read Our experts think this realistic rechargeable Pococo Galaxy Projector is one of the best star projectors and it's cheaper than ever for October Prime Day. Read full story

14:28 <Quasar> Space | James Webb Space Telescope spots a 'cauldron of cosmic creation' | Space photo of the day for Oct. 7, 2026 Chelsea Gohd · 5d ago · 2 min read These colorful clouds contain the explosive lives of growing protostars. Read full story

14:28 <Quasar> Space | 17% off the StarSense Explorer 114AZ Dobsonian — deal ends tonight Harry Bennett · 4d ago · 5 min read This limited time price of $315 for Amazon Prime Big Deal Days is only available for the next 18 hours and gets you $65 off a great telescope observing planets. Read full story

14:29 <Quasar> Space | Le Creuset just sent a Star Trek-themed casserole dish to space... ish (video) Ian Stokes · 4d ago · 3 min read Boldly going where no casserole dish has gone before. Read full story

14:29 <Quasar> Space | I handpicked the best optics deals I found for Prime Day — they end tonight Harry Bennett · 4d ago · 2 min read The Dwarflab Dwarf Mini, Canon image-stabilized binoculars and a 4.5-inch aperture Dobsonian are all on offer in the last few hours of Prime Big Deal Days. Read full story

14:29 <Quasar> Space | The moon hides Jupiter in spectacular photographs of October's lunar occultation Anthony Wood · 4d ago · 4 min read See the best photos of the Oct. 6 lunar occultation of Jupiter. Read full story

14:29 <Quasar> Space | On this day in space! Oct. 7, 2002: NASA launches space shuttle Atlantis to deliver backbone of the ISS on STS-112 mission Hanneke Weitering · 4d ago · 3 min read The shuttle Atlantis delivered the S1 truss for the primary backbone of the International Space Station. Read full story

14:29 <Quasar> Space | The Draconid meteor shower peaks tonight before bedtime. Here's how to see it Anthony Wood · 4d ago · 3 min read The Draconid meteor shower reaches peak activity on the evening of Oct. 8 in the beautifully dark skies ahead of the October new moon. Read full story

14:29 <Quasar> Space | 'Things are going super well at 39A': SpaceX gearing up to launch Starship from Florida for 1st time Mike Wall · 4d ago · 5 min read "We've essentially done a lot of the initial build of the structures and the systems needed for launching Starship." Read full story

14:29 <Quasar> Space | Northern lights possible across the US tonight and over the weekend as 4 CMEs head for Earth Daisy Dobrijevic · 4d ago · 4 min read Multiple CMEs could give the northern lights a boost across the northern US from Oct. 9, with further geomagnetic activity possible into the weekend. Read full story

14:29 <Quasar> Space | Astronomers watch 'vampire' star feeding on the stellar equivalent of 5 trillion quarter-pounder burgers every second Robert Lea · 4d ago · 6 min read The cannibal star could keep on snacking on its brown dwarf victim for billions of years. Read full story

14:29 <Quasar> Space | Why October is one of the best months of the year for stargazing in North America Joe Rao · 4d ago · 5 min read Clearer skies, comfortable temperatures, and a mix of summer and winter constellations make October a particularly rewarding month for stargazers across North America. Read full story

14:30 <Quasar> Space | Relive Starship's 1st-ever orbital flight with these epic SpaceX videos Mike Wall · 4d ago · 2 min read The great views of Starship's first orbital flight keep on coming. Read full story

14:30 <Quasar> Space | Dawn breaks on Mars | Space photo of the day for Oct. 8, 2026 Chelsea Gohd · 4d ago · 2 min read What a view to wake up to. Read full story

14:30 <Quasar> Space | On this day in space! Oct. 8, 1992: NASA's Pioneer Venus probe burns up in Venusian atmosphere after 14 years orbiting the planet Hanneke Weitering · 4d ago · 3 min read pioneer spacecraft above Venus. Read full story

14:30 <Quasar> Space | 'Dude! No way!' Scientists jump for joy over Artemis II moon science results Chelsea Gohd · 3d ago · 6 min read 996 new images, 814 GB of observations and 521 minutes of never-before-heard crew audio. Read full story

14:31 <Quasar> Space | James Webb Space Telescope helps detect the most distant Fast Radio Burst ever seen — and scientists are surprised by its source Robert Lea · 3d ago · 4 min read "This is an extraordinary glimpse into the distant universe." Read full story

14:31 <Quasar> Space | NASA's hunting for a secret underground cave on the moon Chelsea Gohd · 3d ago · 4 min read Will future astronauts take shelter in moon caves? Read full story

14:31 <Quasar> Space | A dead Soviet satellite just broke apart in orbit (again). Experts say it's part of 'a worrying trend' Brett Tingley · 3d ago · 4 min read The satellite previously broke apart in March 2004. Read full story

14:31 <Quasar> Space | How to watch 'Disclosure Day' — stream Steven Spielberg's sci-fi thriller at home Tom Bailey · 3d ago · 4 min read How to stream "Disclosure Day", Steven Spielberg's UFO epic starring Emily Blunt, Josh O'Connor and Colin Firth. Read full story

14:31 <Quasar> Space | Private astronaut Kellie Gerardi gets real about motherhood as she prepares to fly to space again Chelsea Gohd · 3d ago · 7 min read "I think motherhood eventually has to become a bigger part of the conversation if we're serious when we talk about humanity having a sustained presence beyond Earth." Read full story

14:31 <Quasar> Space | Private Cygnus XL cargo spacecraft departs the International Space Station after 6-month stay (video) Mike Wall · 3d ago · 3 min read The S.S. Steven R. Nagel was released by the station's Canadarm2 at 12:44 p.m. ET. Read full story

14:31 <Quasar> Space | Trump awards SpaceX founder Elon Musk National Medal of Science Mike Wall · 3d ago · 3 min read The SpaceX chief was recognized for "engineering achievements of extraordinary ambition and scale." Read full story

14:32 <Quasar> Space | The Milky Way glows over telescopes in the Atacama Desert | Space photo of the day for Oct. 9, 2026 Chelsea Gohd · 3d ago · 2 min read A breathtaking, cosmic view. Read full story

14:32 <Quasar> Space | Blast off this Halloween with my pick of the best space-themed costumes Chris McMullen · 2d ago · 13 min read Stuck for an outfit this spooky season? I've rounded up the best space-themed Halloween costumes out there, sure to turn heads. Read full story

14:32 <Quasar> Space | Did the Soviet Union really fire a cannon from a space station? Micah Hanks · 2d ago · 6 min read an image of the flag of the USSR with illustrations of space stations overlaid on top of it Read full story

14:32 <Quasar> Space | Scientists engineer microbe to help humanity settle Mars Charles Q. Choi · 2d ago · 5 min read "On Mars, nature will do the same jobs for us that she does on Earth — create fertile soil, shelter, oxygen and food." Read full story

14:32 <Quasar> Space | On this day in space! Oct. 9, 1992: Peekskill meteorite hits car in New York after streaking through the atmosphere Hanneke Weitering · 2d ago · 3 min read She had just bought the car for $300, and after it was damaged, she sold it for $10,000. Read full story

14:32 <Quasar> Space | Why is Orion lying down? How The Hunter taught me how the sky moves Jamie Carter · 2d ago · 5 min read We learn constellations from diagrams that stay conveniently upright. The real sky has other ideas — as I discovered when Orion returned looking distinctly wonky. Read full story

14:32 <Quasar> Space | 'Dark Matter' showrunner & author Blake Crouch talks moving beyond the original book for season 2 Jeff Spry · 2d ago · 4 min read 'It's very humbling to get to work with so many smart people who are all trying to execute your vision.' Read full story

14:32 <Quasar> Space | Mysterious 10-minute X-ray burst from a distant galaxy may have come from 2 dead stars colliding Robert Lea · 2d ago · 4 min read "When I saw the X-ray data from this new event, I realized something was up." Read full story

14:32 <Quasar> Space | SpaceX launches 21 satellites to orbit for the US military after 5-day delay (video) Mike Wall · 2d ago · 3 min read The satellites will help fill out the Proliferated Warfighter Space Architecture network in Earth orbit. Read full story

14:32 <Quasar> Space | 10 incredible places to see the 2027 'eclipse of the century' — beyond Luxor Jamie Carter · 2d ago · 7 min read Beyond Luxor and southern Spain, the 2027 eclipse path crosses Mediterranean islands, mountain towns, desert oases and historic cities. Here are 10 less obvious places to experience totality on Aug. 2, 2027. Read full story

14:33 <Quasar> Space | On this day in space! Oct. 10, 1967: The Outer Space Treaty is ratified to lay out how countries can use outer space Hanneke Weitering · 2d ago · 3 min read The treaty dictates that no one can claim territory in outer space, and there's a lot more on planetary resources. Read full story

14:33 <Quasar> Space | This Week In Space podcast: Episode 231 — Sailing the Stellar Seas Space.com Staff · 2d ago · 4 min read Our Favorite Space Sci-Fi! Read full story

14:33 <Quasar> Space | 10 times 'Red Dwarf' beat other TV shows and movies to brilliant sci-fi ideas Richard Edwards · 2d ago · 10 min read The British sitcom has always been a breeding ground for memorable genre concepts. Read full story

14:33 <Quasar> Space | Astrophotographer captures 110 galaxies, star clusters and nebulas in stunning 352-hour mosaic (photo) Anthony Wood · 1d ago · 3 min read Astrophotographer Cornelis van Zuilen spent 352-hours of light data to create a spectacular mosaic of the Messier Catalog. Read full story

14:33 <Quasar> Space | Alien: Isolation 2: This highly anticipated sequel has no release date yet, but here's everything else we know Fran Ruiz · 1d ago · 5 min read More than a decade after the original, Sega and Creative Assembly are bringing back a true Alien survival horror experience. Read full story

14:33 <Quasar> Space | On this day in space! Oct. 11, 1968: Apollo 7 launches into space, NASA's 1st Apollo astronaut crew in orbit Hanneke Weitering · 1d ago · 3 min read This was the first mission of the Apollo program that carried a crew into space. Read full story

14:33 <Quasar> Space | UAE unveils lander for bold 7-asteroid mission set to launch in 2028 (photos) Sharmila Kuthunur · 4h ago · 7 min read "We don't know what we're going to find — that's exploration." Read full story

14:33 <Quasar> Space | What caused a mysterious atmospheric explosion in Siberia in 1908? Micah Hanks · 2h ago · 7 min read The blast produced enough energy to flatten a significant stretch of the Siberian wilderness, marking an event that still serves as a cautionary tale. Read full story

14:33 <Quasar> Space | How the impossible geometry of 'Tomb Raider III''s UFO level was made Daryl Baxter · 33m ago · 8 min read Bigger on the inside? Where have we heard that before? Read full story

14:33 <Quasar> Space | Namibian salt flats look like an alien planet | Space photo of the day for Oct. 12, 2026 Chelsea Gohd · 33m ago · 2 min read Namibia's biggest salt pan looks otherworldly from orbit. Read full story

14:34 <Quasar> Space | On this day in space! Oct. 12, 1964: The Soviet Union launches 1st multi-person cosmonaut crew into space Hanneke Weitering · 5m ago · 3 min read On Oct. 12, 1964, the Soviet Union launched the first multiperson mission, Voskhod 1, which launched three Russian cosmonauts into space. The crew included Vladimir Komarov (commander), Konstantin Feoktistov (engineer) and Boris Yegorov (doctor), shown at right. Read full story

16:33 <Quasar> Space | The 'Halloween Fireballs' are coming. Here's what to expect from the Taurids this year Jamie Carter · 33m ago · 6 min read The Southern and Northern Taurid meteor showers will produce occasional bright, slow-moving meteors worldwide during October and November, with moon-free peaks in 2026. Read full story

17:30 <Curie> Live Science | Who's responsible when an AI agent goes rogue? Carly Page · 21m ago · 9 min read Hacking incidents by AI agents are creating a legal minefield. The developers and deployers of rogue bots could be held liable. Read full story

18:35 <Quasar> Space | The moon could turn astronauts into 'walking, high voltage capacitors' that accidentally zap spacecraft Elizabeth Howell · 35m ago · 3 min read NASA is looking for ideas on how to stop moonwalking astronauts from accidentally creating sparks on their spacecraft. Read full story

19:52 <Curie> NASA Science | NASA’s SpaceX CRS-35 Mission to Launch Health Research Cinnamon Pritchard · 2h ago · 2 min read NASA experiments focused on human and plant health and drug-resistant organisms will travel to the International Space Station aboard SpaceX’s 35th. This research supports astronaut health during long-duration missions through four investigations from the agency’s Biological and Physical Sciences division. Read full story

20:48 <Quasar> Space | Astronomers witness supermassive black hole gorge on a cosmic meal before 'burping' radio jets 300 days later Robert Lea · 48m ago · 5 min read "NGC 1275 reveals the impact of black hole jets on large spatial scales better than any other system." Read full story

21:48 <Quasar> Space | SpaceX launching 6,300 pounds of cargo to the ISS on Oct. 13: Watch it live Mike Wall · 48m ago · 2 min read The company's robotic Dragon capsule is scheduled to lift off Tuesday (Oct. 13) at 6:33 a.m. ET. Read full story

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