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Earlier sources: Space
Space research and engineering study the universe and build the systems used to reach and observe it. Follow astronomy, spacecraft, launch systems, satellites, exploration, and Earth observation.
SYMTRI organizes observations from public sources into a living map. Connections reflect shared subject matter; they do not establish causation or endorse a source.
Open in the map ↗539 classified signals in the fourteen-day window. Recent momentum: steady. These counts include signals awaiting readable evidence.
Earlier sources
Up to ten sources with readable evidence, ordered by their feed timestamp. These archive sources can be older than the live fourteen-day window. This list is a sample, not a measure of total activity. Dates distinguish paper publication, repository creation, model/dataset activity, Hacker News posts, and KEV catalog additions. “First archived” records when SYMTRI first stored the signal.
- arXiv · Published · First archived
On the Orbital Evolution of Giant Planet Pair Embedded in a Gaseous Disk. III. simultaneous gas accretion and the final mass ratio ↗
Recent exoplanet surveys reveal a systematic trend in the mass ratios of giant planet pairs ($> 30 M_\oplus$). Although the $M_{outer}/M_{inner}$ is broadly centered near unity, it exhibits a dependence on orbital separation. Compact pairs tend to have comparable masses, whereas widely separated pairs show outer-heavy configurations. To investigate the origin of this trend, we perform two-dimensional hydrodynamic simulations that couple gas accretion and orbital migration of two giant planet embryos with initial masses of $15-30 M_\oplus$. We explore the effects of disk viscosity, surface dens…
- arXiv · Published · First archived
Structure and evolution of cosmic voids within DESI DR1 ↗
Ongoing stage IV galaxy surveys such as DESI or Euclid offer an unprecedented amount of information to study the large-scale structure of the Universe by mapping tens of millions of galaxies. Within the context of cosmic voids, already released and future catalogues will help better understand the void structure and evolution as well as the cosmological model constraints derived from their statistics. With the recent DESI Data Release 1, our aim is to obtain a new void catalogue that allows us to study the properties of cosmic voids at different redshifts, hence providing insight not only on t…
- arXiv · Published · First archived
The EBLM project - XX. Absolute dynamical masses of five low-mass eclipsing binaries, and an evaluation of mass estimation methods ↗
Eclipsing binaries consisting of a solar-type primary and an M dwarf secondary are key laboratories to study objects at the bottom of the main sequence. Fundamental parameters of such stars have a direct impact upon exoplanetary studies, as searches for temperate Earth-sized planets focus on M dwarf hosts. Eclipsing binaries are essential to measure these parameters. However for stellar masses $<$ 0.35 M$_\odot$ , few double-lined eclipsing systems are known. Thus, stellar evolution models and empirical relations have had to rely on single-lined eclipsing binaries, for instance those from the…
- arXiv · Published · First archived
The EBLM Project - XIX. The absence of radius inflation in a homogeneous analysis of 66 Northern low-mass eclipsing binaries ↗
Precise and accurate measurements of host stars are crucial in the search for Earth-like exoplanets, and M-dwarfs are favourable targets in this quest. Low-mass eclipsing binaries offer unique opportunities to empirically determine stellar masses and radii for low-mass stars where stellar models may be systematically biased. We present results from the EBLM-North sample, the largest homogeneous study of low-mass eclipsing binaries with secondary characterisation yet, combining high-resolution and high-precision radial velocities from SOPHIE and TESS photometry. We measure a median precision fo…
- NASA · Source date · First archived
NASA JPL Testing Readies Voyager Technologies Lander for Moon Mission ↗
4 min read Preparations for Next Moonwalk Simulations Underway (and Underwater) Engineers and technicians use a crane to position Voyager Technologies’ Griffin-1 lunar lander within the 25-Foot Space Simulator at NASA’s Jet Propulsion Laboratory on Aug. 31. The spacecraft recently completed a series of rigorous environmental tests at JPL ahead of launch to the Moon later this year. NASA/JPL-Caltech The testing team moves Voyager Technologies’ Griffin-1 through a hallway to the 25-Foot Space Simulator at JPL. The corridor features photos of the historic spacecraft that have been tested in the f…
- Hacker News · Posted on Hacker News · First archived
NASA's Perseverance Sets Off-World Record for Total Distance Driven ↗
Hacker News discussion.
- NASA · Source date · First archived
NASA Science, Cargo Launch on 35th SpaceX Resupply Mission to Station ↗
A SpaceX Falcon 9 rocket and Dragon spacecraft launched on Tuesday, Oct. 13, 2026, from Space Launch Complex 40 at Cape Canaveral Space Force Station in Florida as part of the company’s 35th Commercial Resupply Services mission to the International Space Station for NASA. Credit: NASA NASA’s SpaceX 35th commercial resupply mission lifted off at 6:33 a.m. EDT Tuesday aboard a Falcon 9 rocket from Space Launch Complex 40 at Cape Canaveral Space Force Station in Florida, carrying more than 6,300 pounds of supplies and hardware, bound for the International Space Station. Following its successful l…
- arXiv · Published · First archived
3D Global Climate Simulations of Synthetic Mars Warming ↗
Artificial warming via engineered aerosols presents a novel pathway to bypass volatile scarcity on modern Mars. Utilizing the Generic Planetary Climate Model, we evaluate the physical feasibility of aerosol-induced terraforming over a full Martian year (669 Sols). Unlike previous approaches that added aerosols to background dust or assumed continuous nanoparticle injection, we simulate the complete substitution of natural dust with a single-injection profile of radiatively active aluminium nanoparticles without continuous dumping. This tests whether initial infrared greenhouse forcing can over…
- arXiv · Published · First archived
Physical characterization of Earth's quasi-satellite 2025 PN7 ↗
A hypothetical origin as lunar ejecta for Earth's quasi-satellites (QS) has gained initial support in recent years, but there is scarce photometric and/or spectroscopic data to support the premise due to the rare observational windows to obtain such data for these small objects. One of the key pieces of evidence supporting the lunar-origin hypothesis, the lunar-like, very red reflectance spectrum of QS (469219) Kamo'oalewa, was recently found to be flawed. We present reflectance spectroscopy of Earth's QS 2025~PN$_7$ obtained with FORS2 at UT1-Antu of the ESO Very Large Telescope. This is only…
- arXiv · Published · First archived
Radiation limits on amino acid preservation and chiral measurement at Oxia Planum ↗
Amino acid enantiomeric excess (EE) is a potential biosignature, but its measurement requires sufficient surviving material as well as preserved chirality. We derive a criterion that separates abundance-limited from racemization-limited preservation and apply it to the Mars Organic Molecule Analyzer (MOMA) on the ExoMars Rosalind Franklin rover. The model combines cosmic-ray and radiogenic doses with laboratory destruction kinetics and assumed ratios of interconversion to destruction rates. For an initially homochiral population of 1000~ppmw, the surviving EE is 58\% or 25\% when the total abu…
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Check each original source for its methods, release status, limitations, and supporting data. A repository announcement, a preprint, and a published study provide different kinds of evidence. SYMTRI’s subject classification helps discovery; it does not independently validate the source’s claims.
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