Space hurricanes can shake Earth's magnetic field and scramble satellites without a solar storm in sight.
Satellites don't stop at borders and neither should science.
A massive filament eruption carved a 250,000-mile-long "canyon of fire" into the sun — and sent a CME sailing into space.
Astrophotographer Philippe Tosi captured explosive Ellerman bombs on the sun's surface as an active sunspot turned toward Earth.
If NASA must pull back, Europe is ready to step up — and do so with open arms.
As Earth spins faster than it has in decades, atomic clocks are catching the difference, and shorter days are on the horizon.
Find out what time the full moon rises on July 10, 2025, how to see the Buck Moon from your location, and why it looks bigger near the horizon.
3I/ATLAS is the third-ever interstellar object discovered.
Auroras may be visible from Alaska to New York as an incoming solar storm could spark geomagnetic storm conditions overnight.
Auroras may be visible from Alaska to Washington as a giant hole in the sun's atmosphere fuels geomagnetic storms with a high-speed solar wind.