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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.
Don't miss the last full moon of 2025 as the 'Cold Supermoon' takes to the autumn sky on Dec. 4
See a stunning supermoon take flight on Dec. 4.
Night Sky Tonight: See the full 'Cold Supermoon' rise on Dec. 4
Find out what you can see in the night sky for tonight, from planets and stars to dazzling meteor showers.
The US must beat China to moon, Trump pick for NASA chief Jared Isaacman tells Senate: 'If we make a mistake, we may never catch up'
Billionaire private astronaut Jared Isaacman didn't mince words Wednesday (Dec. 3) during his second hearing before the Senate committee considering his nomination for NASA administrator.
