Latest News
Latest Comet 3I/ATLAS news: One day until the comet is closest to Earth!
Thursday, Dec. 18, 2025: Your daily feed for the holiday flyby of interstellar comet 3I/ATLAS by Earth.
Will 2026 bring strong auroras? What the sun's recent activity tells us
2025 was another busy year on the sun. But how did it compare with 2024, and what will 2026 bring for solar activity and the northern lights?
On this day in space! Dec. 18, 1999: NASA launches Terra Earth-observing satellite
On Dec. 18, 1999, NASA launched its flagship Terra satellite into Earth's orbit to collect data about Earth's changing climate.
As above, so below: Earth in the sky | Space photo of the day for Dec. 18, 2025
This 3D rendering of our planet was part of France's Festival of Lights celebration.
Rocket launch today: Is there a rocket launch and what time?
Follow Space.com's rocket launch blog for the latest on when the next rocket launch will be and how to follow it live.
Night sky tonight: See the Orion Nebula shine after dark on Dec. 18
Find out what you can see in the night sky for tonight, from planets and stars to dazzling meteor showers.
What time will interstellar comet 3I/ATLAS be closest to Earth tonight?
NASA JPL pinpoints the moment the interstellar visitor passes closest to our planet.
Which is the best star projector for under $50 this Christmas?
After testing and reviewing countless star projectors over the years, we're putting the very best head-to-head to determine which is the best for under $50 this Christmas.
