A rare green comet, which has been streaking across the night sky as it approaches Earth for the first time since the Stone Age, briefly grew a bizarre third tail. This "anti-tail" appeared to streak ...

When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works. Many comets' heads glow a bright green as they stream across the night sky — but why? Comets, ...

Why did 3I/ATLAS interstellar comet turn green and hide tail? The mystery behind the development has drawn major scientific attention. New telescope images from the Lowell Observatory reveal that the ...

Every so often, the Kuiper Belt and Oort Cloud throw galactic snowballs made up of ice, dust and rocks our way: 4.6-billion-year-old leftovers from the formation of the solar system. These snowballs – ...

Comet C/2022 E3 (ZTF) with a short third tail (to the left of the comet) and longer gas and dust tails (to the right of the comet) on Jan. 21. A rare green comet, which has been streaking across the ...