Comet 3I/ATLAS will get closest to Earth on Dec. 19, and astronomers will be watching.
Tracking comets accurately is hard. A new effort with the U.N. and NASA aims to better chart these visitors using 3I/ATLAS.
A vast ring of rocky leftovers between Mars and Jupiter, the asteroid belt preserves clues to how the planets — and Earth ...
One of the most perfectly fun ‘90s sci-fi action blockbusters is now available to stream on Disney+ for viewers.
Residents react after a Russian missile hit an apartment building during Russia's combined missile and drone air attack in Kyiv, Ukraine, June 17, 2025 ...