Japan’s latest attempt to expand its homegrown navigation network ended abruptly when the Michibiki 5 satellite launch was ...

I/ATLAS has passed its closest point to Earth, meaning we will soon lose sight of it for good. Some scientists want to send a spacecraft to chase down the alien comet — or the next interstellar object ...

The interstellar comet 3I/ATLAS made its closest approach to Earth today (Dec. 19, 2025). Here's the latest news you need to know. Comet 3I/ATLAS will approach within 168 million miles (270 million ...