Friday, October 24, 2025
Moving fast applies. :)
A recent Gemini Observatory image of comet 3I/ATLAS (background) overlaid with the new Two-meter Twin Telescope image of the comet's jet (inset). |
Credit: Comet photograph: International Gemini Observatory/NOIRLab/NSF/AURA/Shadow the ScientistImage Processing: J. Miller & M. Rodriguez (International Gemini Observatory/NSF NOIRLab), T.A. Rector (University of Alaska Anchorage/NSF NOIRLab), M. Zamani (NSF NOIRLab); Inset: Teide Observatory, M. Serra-Ricart, Light Bridges
Something afoot as
3I/Atlas
is a comet of a different kind without question.
The extrasolar entity,
which is likely
a comet, is barreling toward us at more than 130,000 mph (210,000 km/h) and will reach its closest point to the sun in late October, before beginning its long journey back out toward interstellar space.
Telling words ...
which is likely
... gives one pause.
3I/ATLAS (previously dubbed A11pl3Z) has a high speed and extremely flat trajectory, which indicate it is an interstellar object.
(Image credit: David Rankin/Catalina Sky Survey)
Comet 3I/ATLAS is the third known object from outside our solar system to be discovered passing through our celestial neighborhood. Astronomers have categorized this object as interstellar because of the hyperbolic shape of its orbital path. (It does not follow a closed orbital path about the Sun.)
When the orbit of 3I/ATLAS is traced into the past, the comet clearly originates from outside our solar system.
Animation of comet 3I/ATLAS's trajectory through our solar system.
NASA/JPL
Discovered in late June and confirmed by NASA in early July,
the comet originates from an unknown star system far beyond our own.
3I/ATLAS is only the third interstellar object ever detected. At somewhere between 3 and 7 miles (5 to 11 kilometers) wide, i
t is the largest interstellar object ever to cross our path, and likely the oldest, potentially dating to billions of years before the birth of the sun
Something's afoot indeed.
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