After launching to subscribers willing to fork out hundreds of dollars a month this summer, Perplexity’s agentic AI browser Comet is now available to everyone for free. “The internet is better on ...

Comet 3I/ATLAS, the third interstellar object ever detected, will swing closest to Earth overnight from Thursday to Friday (Dec. 18 to 19). Here’s how to see it.

Forbes contributors publish independent expert analyses and insights. An award-winning reporter writing about stargazing and the night sky. Comet A3, also known as Comet Tsuchinshan-ATLAS (C/2023 A3), ...