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Mercury is hard to spot, but you can catch it in the morning sky this month
If you've never sighted this rocky little world for yourself, you'll never get a better opportunity than right now to see it.
Rare images reveal active sunspots minutes before they unleashed powerful X-flares that caused November 2025's stunning auroras
We don't often get a good look at X-class solar flares from ground-based observatories.
Watch the 'PC Gaming Show: Most Wanted' for updates on High on Life 2, Remnant Protocol, plus more cool sci-fi & space games
Check out the PC Gaming Show: Most Wanted stream and see the sci-fi and space games you'll be playing in 2026 and beyond.
Damaged launch pad: How long before Russia can send astronauts to the ISS again?
A mishap during the successful Nov. 27 launch of three astronauts damaged the only pad that currently supports Russian crewed orbital liftoffs. How long before things are back up and running again?
Geminid shooting stars: One of 2025's most exciting meteor showers begins tonight
The Geminid meteor shower is active from Dec. 4 and hits its peak on the night of Dec. 13-14.
See the metal guts of a satellite in this wild X-ray view | Space photo of the day for Dec. 4, 2025
The EURECA spacecraft flew on the space shuttle Atlantis in 1992.
On this day in space! Dec. 4, 1965: Gemini 7 launches on 1st orbital rendezvous mission
On Dec. 4, 1965, NASA launched the crewed Gemini 7 spacecraft on a two-week-long mission in low-Earth orbit.
Why is the universe made of matter? These 'ghost particle' experiments could help us find out
A new joint analysis from the NOvA and T2K experiments offers the most precise look yet at neutrino behavior, bringing scientists closer to understanding why the universe is made of matter.
