Tuesday marks the tenth anniversary of a huge astronomical milestone: the first and only time we have landed on a comet. The ...

Hale-Bopp originated in the Oort Cloud, a theoretical shell of icy planetesimals surrounding the sun in the outer reaches of ...

Did you see the comet? Visible just after sunset for the last week from the northern hemisphere — and now receding from Earth along its orbital path — comet Tsuchinshan-ATLAS (also called C ...

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 astronomical treats, it looks like we will be able to add a comet to ...

A recently discovered comet that some stargazers had hoped to see during Halloween week has disintegrated before the day of ghosts and ghouls. NASA confirmed Tuesday its sun-observing spacecraft ...

How, when, and where to look to see Comet C/2023 A3 (Tsuchinshan-ATLAS) after sunset this weekend, with sky charts, before it disappears.

An ancient comet that was last visible when Neanderthals roamed the Earth is soaring above our night sky again before it disappears for another 80,000 years. Tuesday night will present one of the ...

And now it's been the once-in-a-lifetime comet. The comet first entered our orbit Oct. 12 when it was closest to Earth at approximately 44 million miles. Since then, observers, especially in ...

An ancient comet is gracing our night skies this month. Catch it now because it won’t be back for another 80,000 years. Comet Tsuchinshan–ATLAS, discovered in 2023, is expected to be visible ...

A once-in-many-lifetimes comet is zipping by Earth right now. Comet C/2023 A3 — known simply as Comet A3 — was first discovered last year and was first visible in the night sky earlier this ...

Help us keep bring these critical stories to light. Your support makes all the difference. A comet that visits the solar system every 80,000 years is set to pass Earth in the coming days ...