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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 ↗517 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
Shaping binary black hole merger efficiency with gravitational wave observations ↗
Gravitational wave (GW) astronomy offers unprecedented insights into binary black hole (BBH) coalescence. However, many of the key quantities involved remain inaccessible to direct observations. The BBH merger rate density is deeply linked to both the merger efficiency and the distribution of delay time between binary formation and merger, neither of which is directly constrained by observations. Disentangling their impact on the merger rate represents a highly non-trivial endeavour. Here we present a semi-parametric BBH population model, based on population synthesis simulations of both isola…
- NASA · Source date · First archived
NASA Opens Applications for Second Season of ORBIT Student Challenge ↗
2 Min Read NASA Opens Applications for Second Season of ORBIT Student Challenge Following a successful inaugural year of ingenuity and career building, NASA ORBIT (Opportunities in Research, Business, Innovation, and Technology) has officially returned for a second season to bring university and college student innovation to the forefront of Earth technology development and deep-space exploration. Registration for the 2026–2027 challenge is open through Monday, Nov. 16, 2026, through the NASA STEM Gateway . Expanded for its second season with up to $500,000 in total prize funding, NASA’s ORBIT…
- arXiv · Published · First archived
On-sky commissioning and technical performance of Proto-NUX at Pic du Midi ↗
The Near-Ultraviolet eXplorer (NUX) is a proposed ground-based observing facility designed to expand near-ultraviolet (NUV) astronomy by enabling observations in the 300--350 nm range from Earth. The full system is intended to consist of four modified 36 cm Celestron RASA telescopes with custom NUV-optimized optics and UV-sensitive CMOS detectors, providing a total field of view of about 67 square degrees for high-cadence searches for fast, hot transients. To validate this concept, a single-telescope prototype, Proto-NUX, was constructed. Its optical design and development are described in pre…
- arXiv · Published · First archived
Detecting atmospheres in the presence of stellar contamination: an empirically calibrated framework applied to four JWST/NIRSpec PRISM transits of TRAPPIST-1c ↗
Transmission spectroscopy of rocky exoplanets orbiting late M dwarfs is limited by stellar contamination rather than photon noise. We present a framework for this contamination-dominated regime, fitting all transit epochs jointly with a Gaussian process per epoch for the time-varying stellar contamination and a single atmospheric model shared across epochs. We use pure CO$_2$, H$_2$O, and CH$_4$ models scaled by their peak-to-trough amplitude, allowing us to measure how large a signal must be to be recovered. We calibrate this framework using injection-recovery tests and 17 archival JWST/PRISM…
- NASA · Source date · First archived
NSTGRO 2026 ↗
NSTGRO Homepage Omar Alyousef University Of Memphis Polycatenated Architected Materials (PAM) for Origami-Inspired Space Docking Ports Cade Armstrong University Of Texas at Austin Intelligent Multi-Agent Constellations for Cooperative Cislunar Operations Laurel Barnett Harvard University Photonic SNSPD Readout and Feed Forward System for Improved Optical Communication Capabilities Katie Barcak William Marsh Rice University Compact magnetic heat switch for thermal management of long duration low power exploration missions Austin Bodin University Of Colorado, Boulder Rapid Robust Trajectory Desi…
- NASA · Source date · First archived
Under the Microscope: NASA-Made Material for Moon Manufacturing ↗
Credit: NASA Credit: NASA Photos taken using a microscope reveal the colorful, kaleidoscope-like crystal structure of a new NASA-made material that could be used for manufacturing during future space missions. Developed at NASA’s Glenn Research Center in Cleveland, the material could be created directly on the Moon or Mars, allowing NASA to pack fewer supplies — saving weight and reducing launch costs. To make the material, research chemical engineer Allison Christy and her team of summer interns at NASA Glenn — Tyler Klinchuch, Ethan Bilodeau, and Emma Levenson — mixed a special plastic with…
- arXiv · Published · First archived
Independent Verification Paths Are Not Independent: A Case Study of Common-Mode Failure in a Satellite Catalogue Pipeline ↗
A common safeguard for a data pipeline is redundant computation: derive each published number by two routes built on different technology and refuse to exit when they disagree. We report one such gate failing, in a cross-catalogue integrity study of two open registers of Earth-orbiting objects. A gate comparing a set-based Python path with SPARQL queries over the emitted RDF graph printed ALL CROSS-CHECKS AGREE on seven counts. Three were wrong, one overstated more than fourfold (932 against 220). Both paths imported the same constants, which encoded a misreading of the source's status vocabul…
- arXiv · Published · First archived
TOI-6981 b: a transiting sub-Neptune at the water ice line ↗
We present TOI-6981 b, a cold (Teq= 170.0 +/-4.5 K, assuming an Earth-like albedo) sub-Neptune (Rb=2.40+/-0.10 R_oplus) on a 60.8 day orbit around around its M4-type host star (R*=0.304 +/- 0.012 R_odot, M*=0.296 +/- 0.026 M_odot, Teff = 3215+/-58K), part of the SPECULOOS TEMPOS program. We validate the planetary nature of TOI-6981 b using ground-based follow-up photometry, statistical validation and high-resolution spectroscopy. At such cold temperatures, TOI-6981 b sits roughly at the location of the water ice line (approx 170 K). Given its orbital period and high transmission spectroscopy m…
- arXiv · Published · First archived
The Occurrence Rate of Planets Around Subgiant Stars from TESS Photometric Survey ↗
Subgiant stars represent a critical phase in stellar evolution, offering an opportunity to investigate how planetary systems respond to the early stages of post-main-sequence expansion. Despite their importance, systematic occurrence-rate studies of this population remain sparse compared with those of main-sequence and red-giant hosts. In this work, we present a uniform analysis of planet occurrence around a sample of 282,904 subgiant stars selected from the Gaia DR3 catalogue. We perform an independent reanalysis of TESS light curves for transit-signal detection and refinement, followed by mu…
- arXiv · Published · First archived
Homogeneous Nucleation of Water Vapor Evidenced by Elongated Clouds on Mars ↗
It is widely accepted that water vapor forms clouds by heterogeneous nucleation (condensation on pre-existing dry nuclei). Homogeneous nucleation (directly from water vapor, without a pre-existing nuclei) is theoretically possible, but it requires high levels of supersaturation and so it is not considered a viable cloud formation process under real atmospheric conditions. Here, we show that introducing homogeneous nucleation in a meteorological model of Mars allows to successfully reproduce the unique characteristics of the Arsia Mons Elongated Cloud, a remarkable water ice cloud that occurs r…
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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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