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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 ↗532 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.
- NASA · Source date · First archived
NASA Satellites Observe Historic 2026 El Niño ↗
6 Min Read NASA Satellites Observe Historic 2026 El Niño This visualization compares three ocean data products, sea surface temperature anomaly, apparent visible wavelength, and sea surface height anomaly, over the same months in 2025 and 2026. Signals of El Niño in each map are highlighted with pop-up labels. Credits: NASA’s Scientific Visualization Studio A phenomenon rarer than a solar eclipse and more powerful than any single storm system is unfolding this fall, and NASA is tracking it closely. El Niño is a natural climate pattern that emerges roughly every two to seven years marked by war…
- arXiv · Published · First archived
LSST and Keck characterization of outer Main Belt comet P/2026 N2 ↗
We characterize comet P/2026 N2, whose outer Main Belt orbit has $a=3.07$ au, $e=0.21$, and $i=2.25^\circ$, using optical observations, archival imaging, and dynamical integrations. Observations from the Legacy Survey of Space and Time (LSST) at NSF-DOE Vera C. Rubin Observatory in 2026 June-July and Keck/LRIS imaging on October 7 show active morphology across perihelion over 102 days. Within a projected aperture radius of approximately 1,000 km, Keck colors of $g-r=0.50\pm0.05$ and $r-i=0.06\pm0.06$ mag are consistent with nearly neutral B/C-complex reflectance. Phase-corrected $a(0^\circ)fρ=…
- arXiv · Published · First archived
Singles in Disguise: Kepler's Low-SNR Single-Transiting Systems as Incompletely Detected Multis ↗
NASA's Kepler mission found more systems with one transiting planet (``singles'') than expected from those with several (``multis''). This excess was first taken as evidence for a Kepler dichotomy -- a second population of intrinsically single or highly inclined systems -- but later work argued that selection effects acting on a single population can reproduce it. Singles also show a puzzling excess of low signal-to-noise ratio (SNR) detections relative to multis. The question arises whether this excess reflects false positives, a selection effect, or an inherent population difference. Here we…
- arXiv · Published · First archived
Identifying deformed exoplanets with JWST and Ariel: A target selection metric for phase curve observations ↗
The shape of an exoplanet encodes fundamental information about its internal structure. For close-in giant planets, strong stellar tidal forces induce measurable deformations that can be probed through high-precision photometry. These deformations are quantified by the fluid Love numbers, which characterise a planet's response to external perturbations and are directly linked to its internal density distribution. In this work, we assess the potential of JWST and the future Ariel mission to constrain the Love numbers of hot Jupiters through full-orbit phase curve observations. To identify the m…
- arXiv · Published · First archived
Illumination-Aware Active Perception for Spacecraft Inspection ↗
Harsh and rapidly varying orbital illumination introduces failure modes during spacecraft inspection. Existing planners rely on line-of-sight inspection metrics which perform occlusion checks against a known target and conflate geometric visibility with task-relevant information. These metrics overlook illumination effects including eclipse, self-shadowing, and specular reflection from spacecraft materials and tend to declare components as inspected despite the corresponding images lacking sufficient information. We propose an inspection-planning framework that replaces geometric visibility wi…
- arXiv · Published · First archived
Chemical Demographics of Star-forming Regions ↗
Our understanding of complex organic chemistry during the formation of stars and planets is shaped by a handful of cherry-picked sources with bright molecular emission lines. This observational bias impedes our assessment of how universal chemical complexity is during star formation. The lack of systematic wideband spectral surveys for statistically significant samples of protostars and cores is a major roadblock to properly probing how COM inventories and abundances depend on the vast range of physical conditions, local cloud and global galactic environments, and evolutionary timescales of lo…
- arXiv · Published · First archived
A New Method for Constraining 3D Exoplanet Atmospheres: Application to WASP-94A b's Panchromatic Spectrum ↗
A growing number of transiting exoplanets exhibit spectroscopic evidence that their leading and trailing limbs differ. Interpreting these observations is now the limiting step. The standard approach of fitting limb-resolved transit depths results in highly anti-correlated transit depths, and treating them as independent measurements can result in strongly biased ($3σ$) retrieved molecular abundances. We present an inference framework that avoids these correlations by using the temporal signature of limb asymmetry instead. This wavelength-dependent shift in mid-transit time, or `time-shift spec…
- arXiv · Published · First archived
Millimetre/Sub-Millimetre SETI: Expanding the Radio Technosignature Parameter Space with ALMA2040 ↗
The search for extraterrestrial intelligence (SETI) has been largely concentrated at centimetre wavelengths, and in particular in the 'water hole' (1.42-1.66 GHz) range. The millimetre and sub-millimetre sky is, by contrast, almost entirely unsearched. It also offers some natural advantages: above 35 GHz, the interstellar and interplanetary media are effectively transparent and non-dispersive, terrestrial interference is sparse, and interferometry suppresses what interference remains. Both antenna gain and usable fractional bandwidth increase with frequency, so a civilisation optimising direct…
- NASA · Source date · First archived
Power Up: Roll Out Solar Arrays Boost Space Station Power Supply ↗
2 Min Read Power Up: Roll Out Solar Arrays Boost Space Station Power Supply From the International Space Station’s unique position 250 miles above Earth, the Sun is a vital source of energy. Solar power supports the station’s life support systems, daily activities, and hundreds of research investigations that improve life on Earth and prepare humans for deep space exploration. Over the past five years, NASA augmented the station’s power generation and distribution capability with next-generation International Space Station Roll Out Solar Arrays (IROSAs). An International Space Station Roll Out…
- arXiv · Published · First archived
A Sample of Thick-Disk Stars Hosting Hot Jupiters ↗
We present a homogeneous analysis of 268 confirmed and candidate transiting hot-Jupiter host stars with 4800K 8 Gyr, may allow for a better understanding of how the formation of hot Jupiters depends on galactic environment, and how their orbits evolve over very long time scales.
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How to assess evidence about Space
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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