Looking for a sky event this week? Check out our full Sky This Week column. December 22: The Ursid meteor shower peaks Rising ...

Alfredo has a PhD in Astrophysics and a Master's in Quantum Fields and Fundamental Forces from Imperial College London. Katy ...

The interstellar comet 3I/ATLAS made its closest approach to Earth today (Dec. 19, 2025). Here's the latest news you need to ...

A stray comet from another star swings past Earth this week in one last hurrah before racing back toward interstellar space.

Comet 3I/ATLAS makes closest approach to Earth, 170 million miles away, offering rare insights into interstellar space and ...

Officially designated 3I/Atlas after its discovery this summer, the comet will make its closest approach to Earth this Friday ...

I/ATLAS comet is the 3rd-ever object discovered that originated from outside our solar system. It's not a threat, approaches ...

NASA released close-up images on Wednesday of the rare interstellar comet that's making a single pass through the solar system. One of the images shows the comet, also known as 3I/ATLAS, as it moves ...

November 2025, the PUNCH satellite captured a dramatic sequence of the comet's tail twisting and reacting to powerful solar activity.

"...an enhanced flux of millimeters scale particles from 3I/ATLAS could be collected by a space experiment on a satellite or ...