Comet 3I/ATLAS is the third known interstellar comet after 2017's 1I/'Oumuamua and 2019's 2I/Borisov. It was discovered on ...

Interstellar comet 3I/ATLAS makes its closest approach to Earth on Dec. 19. Here's how you can track its progress both during ...

December is the month that fans of 3I/ATLAS have been waiting for as the interstellar comet makes its closest approach to ...

Interstellar comet 3I/ATLAS will fly by our planet at a safe distance of 1.8 astronomical units (roughly 167 million miles or ...

We combed through a bunch of bestselling mysteries and thrillers published this year for your end-of-the-year reading.

Comet 3I/ATLAS, the third interstellar object ever detected, will swing closest to Earth overnight from Thursday to Friday ...

Comet 3I/ATLAS is a rare visitor passing briefly through our solar system. Here’s how to find it in the night sky—and what ...

With 3I/ATLAS slated to make its Earth tour in two days, amateur photographers and astronomers alike are scrambling to catch ...

The comet's approach marks only the third known time an object from outside the Milky Way has passed through our solar system.

I've taken incredible photos of this interstellar comet for more than a month using two tiny iPad-connected scopes in my ...

If you’ve ever walked out of an eye exam clutching a fresh prescription, wondering what all those numbers and abbreviations mean, you’re not alone. Eye prescriptions often look like a jumble of pluses ...