THE INTERNET IS THINKING
Earlier sources: Astronomy
This space thread follows astronomy through original research, public projects, and source reports. Read the evidence below to see which developments are represented in SYMTRI’s archive.
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 ↗271 classified signals in the fourteen-day window. 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
Planetary eccentricity enhances inward comet transport but suppresses gentle impacts ↗
Comets can supply volatile and prebiotic material to rocky planets, but survival of fragile molecules depends on atmospheric entry and impact. Compact planet chains can transfer comets inward at low velocity. We test whether modest planetary eccentricity preserves this route. We follow 64,000 comets from the region between the two outermost planets of an eight-planet chain to an Earth-mass planet on a temperate orbit around a $0.1 M_\odot$ star. A second suite of simulations isolates the last transfer to the innermost planet across initial planet eccentricities $e_{p,0}=0$--$0.05$ and separati…
- arXiv · Published · First archived
Comparing Optimized Systematic Error Correction Methods on Selected TESS Light Curves ↗
The correction of systematic errors in TESS light curves is crucial for all astrophysical analyses employing these observations. Here we present a data analysis and a software package, SysCoCoPy, to investigate and directly compare the performance of the Presearch Data Conditioning (PDC) correcting method from the Science Processing Operations Center (SPOC) pipeline and three correctors developed by the community. We incorporate these three correctors based on their implementations in Lightkurve and are particularly interested in the ability of the four correctors to remove scattered light con…
- OpenAlex · Published · First archived
Astronomical Self-Calibration of Fisheye Cameras for Photovoltaic Sun-Tracking Applications ↗
Vision-based photovoltaic (PV) tracking requires a calibrated mapping from fisheye pixels to physical solar directions, yet deployed cameras may lack calibration targets or a surveyed pose. This study asks whether timestamped sky images can recover a camera mapping that is internally consistent with a solar ephemeris, while explicitly accounting for localisation coverage and parameter uncertainty. A staged pipeline combines photometric solar-candidate detection, ephemeris-guided re-localisation, temporal and model-consistency gates, three monotonic fisheye projections, and six calibration solv…
- OpenAlex · Published · First archived
‘The auditors of their discourses, the readers of their treatises, were men’: questions of gender and audience in Agnes Clerke’s astronomy publications ↗
Abstract In the nineteenth century, British and Irish women interested in astronomical work faced limited options, generally restricted to the roles of human computers in observatories or assistants on eclipse expeditions. Agnes Clerke (1842–1907) nonetheless navigated a successful career as a writer of popular-astronomy books, including her most famous work, A Popular History of Astronomy during the Nineteenth Century (1885). Women are notably absent in Clerke’s Popular History , a marked contrast to a 1901 article titled ‘Women in science’ that she published in the Victorian women’s periodic…
- arXiv · Published · First archived
Correlations between the Carbon-to-Oxygen Ratio and the Orbital and Physical Properties of Exoplanets ↗
Studies suggest that protoplanetary disks around stars with high carbon-to-oxygen (C/O) ratios can produce terrestrial planets with carbon-dominated compositions instead of silicon-dominated ones. While previous work studied the evolution of these disks and the planets that form within them, none analyze in detail how the differences in the surface density profiles of these disks could affect the architectures and iron and siderophile contents of exoplanetary systems. Here, we present a new study that uses the N-body integrator REBOUND and data from a sequential dust condensation model to simu…
- Hacker News · Posted on Hacker News · First archived
Origin: Computer Science Not About Computers, Astronomy Not About Telescopes ↗
Hacker News discussion.
- Hacker News · Posted on Hacker News · First archived
Immersive Cosmology ↗
Hacker News discussion.
- arXiv · Published · First archived
How eccentric is the debris disk of epsilon Eridani? ALMA reveals a near-circular belt ↗
The nearby (3.2 pc) K2V star $ε$ Eridani hosts the closest detected debris disk and an exo-Jupiter analog ($ε$ Eridani b). In this work, we reanalyse ALMA Band 6 (1.29 mm) observations of $ε$ Eridani to assess whether its outer debris belt exhibits a non-zero eccentricity, potentially induced by planet-disk interactions. Considering two models, one that accounts for the disk's forced eccentricity ($e_\mathrm{f}$) and another that accounts for a proper eccentricity ($e_\mathrm{p}$), we place stringent (99.7th-percentile) upper limits of $e_\mathrm{f} < 2.6\%$ and $e_\mathrm{p} < 6.8\%$, respect…
- arXiv · Published · First archived
Probing the Reionization History and Bubble Sizes with JWST Lyman-$α$ Fraction Measurements ↗
Recent James Webb Space Telescope (JWST) measurements quantify the fraction of ultraviolet-selected galaxies showing detectable Lyman-alpha (Ly-$α$) lines at $z \sim 6-14$. These Ly-$α$ fractions are partly shaped by Ly-$α$ scattering from neutral hydrogen in the surrounding intergalactic medium (IGM), and so the observed Ly-$α$ fraction evolution can inform our understanding of the reionization history and the size distribution of ionized bubbles during reionization. We compare the JWST measurements with Ly-$α$ transmission calculations based on both the THESAN reionization simulations and a…
- arXiv · Published · First archived
Water enhances the formation of refractory sulfur in interstellar ices ↗
Sulfur is the tenth most abundant element in space, yet it is strongly depleted in the gas phase of dense interstellar regions, suggesting sequestration in dust grain components that are difficult to detect. We study whether UV irradiation and thermal processing of H2S-containing interstellar-ice analogues can produce refractory sulfur species, and whether water-dominated ice enhances their formation. We performed UV irradiation and warm-up experiments on H2S-containing ice analogues with and without water, and the resulting refractory residues were analysed ex situ. Refractory sulfur species,…
Live window recorded . This is the ingestion observation time, not the publication or discovery date of each source.
How to assess evidence about Astronomy
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.
See the collection and counting methodology ↗ · Read the weekly synthesis ↗
Related threads
Explore related regions
These navigation suggestions are part of the map’s editorial structure, rather than measured evidence of a connection.