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

Solar systems mostly keep to themselves. What’s ours is ours and what’s not is not. Stars are simply too far from each ...

Here's an observers' guide to the newly discovered Comet 2025 F2 (SWAN), which is visible in northern skies right now. ... While such colors show up well in photographs, ...

Comet Kohoutek, which offered a glimpse in 1973, broke up while passing too close to the sun. In 2013, Comet Ison was broken up by the sun’s intense heat and gravity. But Comet C/2023 A3 survived.

A recently discovered comet, named C/2023 A3 Tsuchinshan–ATLAS, makes its closest approach of Earth on Saturday. The comet’s next appearance may be in 80,000 years.

A recently discovered comet, known as C/2023 A3 Tsuchinshan–ATLAS, is making its closest approach to Earth in 80,000 years. Here's how you can see it.

How to see comet A3. Depending on your location and the amount of light pollution nearby, it may be worth heading somewhere dark enough to view C/2023 A3 unfettered by the glow of a bustling city.

How to find Comet C/2025 F2 (SWAN) in the morning sky. (Image credit: Joe Rao/Starry Night Pro 8.0) April 24 is "transition day" for C/2025 F2 (SWAN), as it moves from morning to evening sky ...