A Harvard astrophysicists is making waves with an assertion that a recently discovered comet could actually be alien technology. Most astrophysicists widely agree 3I/ATLAS displays all the telltale ...

Images of interstellar comet 3I/ATLAS snapped during the September 7 total lunar eclipse seem to suggest that the latest visitor to the Solar System may be turning green. That's not all that strange ...

A new image shows the growing tail of a comet from another star system streaking across our solar system. The image of comet 3I/ATLAS was captured on Aug. 27 using one of the telescopes at the ...

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A rare visitor from another star system has been spotted. It's the interstellar comet 3I/ATLAS, and it was detected on July 1 by the NASA-funded Asteroid Terrestrial-impact Last Alert System, or ATLAS ...

CAPE CANAVERAL, Fla. — NASA has discovered an interstellar comet that’s wandered into our backyard. The space agency spotted the quick-moving object with the Atlas telescope in Chile recently, and ...

A comet discovered last year — known as C/2023 A3 Tsuchinshan-ATLAS — is set to make a close approach to Earth in the coming days. The snowy dirtball is nearly 2 miles in diameter and its tail of dust ...

A comet that just skirted past our sun should light up the night sky this week. The comet, Comet ATLAS (C/2024 G3), was only discovered in April 2024, and reached its closest point to our sun ...

Tuesday marks the tenth anniversary of a huge astronomical milestone: the first and only time we have landed on a comet. The Rosetta probe's lander Philae landed on Comet 67P/Churyumov-Gerasimenko on ...

The "comet of the century" Comet C/2023 A3 Tsuchinshan-ATLAS has been delighting stargazers after reaching its closest point to Earth in more than 80,000 years over the weekend. The brightest comet to ...