I/ATLAS, earlier known as A11pI3Z, is only the third interstellar visitor to be discovered passing through our corner of the ...

I/ATLAS might be over 7 billion years old, a new study reports, which would make it the oldest comet known. But experts caution we need more data.

Comet Bennett (C/1969 Y1) Comet Bennett, the brightest comet seen after Ikeya-Seki, was a magnitude 8.5 object when South African amateur astronomer John Caister Bennett discovered it Dec. 28, 1969.

Comets are our cosmic time capsules and can reveal a lot about the early solar system. When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works ...

C/2022 E2 (ATLAS): This comet is expected to be visible starting in April 2025 and peak in autumn, with optimal observation likely requiring a telescope.It will be most prominent to observers in ...

Comet A3 could be bright enough to see with naked eye 02:27. BOSTON - It isn't often that we get the chance to see a comet with the naked eye.But, in a year already filled with so many ...

By contrast, comet 67P/Churyumov–Gerasimenko, which the European Space Agency’s Rosetta spacecraft orbited from 2014 to 2016, was only about 2.5 miles wide.

This image of comet C/2016 R2 (PANSTARRS) was captured from ESO's SPECULOOS telescope at the Paranal Observatory in Chile. (Image credit: ESO/SPECULOOS Team/E. Jehin) ...

A new study suggests that up to 60% of near-Earth objects are dark comets, a nearly invisible hybrid object that behaves like a comet and an asteroid at the same time.