Comet C/2023 (Tsuchinshan-ATLAS) is putting on a once-in-a-lifetime show. Here's how to see it before it leaves.

The phenomenon, known as an anti-tail, is an optical illusion caused by the Earth's position in the comet's orbital plane.

How, when, and where to look to see Comet C/2023 A3 (Tsuchinshan-ATLAS) after sunset this Saturday, Oct. 19, with sky charts, ...

How, when, and where to look to see Comet C/2023 A3 (Tsuchinshan-ATLAS) after sunset this weekend, on Friday, Oct. 18, ...

Only discovered in 2023, Comet C/2023A3 Tsuchinshan-ATLAS is visible through the naked eye right now. It won't return for ...

The coma and long tail of comet Tsuchinshan-ATLAS, also called C/2023 A3 (Tsuchinshan–ATLAS), is currently shining at ...

In a remarkable cosmic event captured by the Solar and Heliospheric Observatory, Comet C/2023 A3 (Tsuchinshan–ATLAS), the ...

A comet discovered in 2023 will pass by Earth this weekend and become increasingly visible in Central Illinois over the next ...

The Hunter's Moon of October 2024 will be the largest full moon of the year thanks to its proximity to Earth. The moon ...

Comet C/2023 A3 (Tsuchinshan-ATLAS) is the brightest comet in 13 years, visible to the naked eye. Since Oct. 11, observers in ...

ESA and NASA's SOHO spacecraft capture a video of Comet C/2023 A3 (Tsuchinshan–ATLAS) glowing as it raced through space.

The best comet of the year is starting to fade in brightness, but it’s still an easy naked-eye object in the evening sky.