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Loading contentThe Asteroid Terrestrial-impact Last Alert System — a NASA-funded network of small survey telescopes, operated by the University of Hawaiʻi, that scans the whole visible sky nightly for moving objects and impact hazards. Its Chilean telescope discovered the third interstellar object, 3I/ATLAS, in 2025.
sky_survey:atlasOpen data
In the graph export: graph.json · graph.jsonld
Planned API: GET /api/v0/entities/sky_survey:atlas
Scientific entity. See the evidence framework and authority dashboard.
How ATLAS connects across Asteria Star — scientific, cultural, and astrological links are kept separate.
The third confirmed interstellar object, discovered on 1 July 2025 by the ATLAS survey in Chile. Its orbit is the most strongly hyperbolic of the three found so far, with an eccentricity of roughly 6, and it showed cometary activity as it passed through the inner Solar System in late 2025. Some physical parameters remain preliminary, but its interstellar origin is established by the trajectory.
A wide-field survey images the sky repeatedly and flags anything that has changed — a new point of light, or one that has brightened or moved. The candidate is issued as an alert within seconds.
Dedicated survey telescopes scan the sky night after night for moving points of light — the near-Earth asteroids and comets. Catalina, Pan-STARRS, and ATLAS lead the search from the ground, and the Rubin Observatory will transform it.
The Two Micron All Sky Survey imaged the entire sky in three near-infrared bands, cataloguing hundreds of millions of stars and galaxies.
A NASA-funded near-Earth-object survey based at the University of Arizona, using telescopes on Mount Lemmon and Mount Bigelow. It is a prolific discoverer of comets and near-Earth asteroids, including the hyperbolic long-period comet C/2007 W1 (Boattini).
The Dark Energy Survey mapped hundreds of millions of galaxies from Cerro Tololo to probe the nature of cosmic acceleration.
The Digitized Sky Survey is a digital scan of historical photographic sky surveys, a foundational all-sky reference for astronomy.
Gaia Data Release 3 provides positions, distances, motions, and physical properties for nearly two billion stars — the most detailed map of the Milky Way to date.
The Hubble Deep Field was a long exposure of a tiny, apparently empty patch of sky that revealed thousands of distant galaxies.
Facts on this topic will be cited from these primary and reference sources.
Mission data, planetary science, space telescopes, and public-domain imagery.
Most NASA-produced imagery is in the public domain; individual items are checked for usage terms before publication.
Orbital data, ephemerides, and small-body parameters for planets, asteroids, and comets.