Researchers may have finally found the ghostly footprint of Jupiter's moon Callisto in the planet's auroras.
See our amazing collection of stories and features about the increasingly important topic of space weather (aka solar storms).
Intense radiation from red dwarf stars could make their planets uninhabitable or restrict life on such worlds to the oceans, a new study suggests.
Out of billions of stars in the Milky Way galaxy, there's one in particular, orbiting 25,000 light-years from the galactic core, that affects Earth day by day, moment by moment.
The shimmering dance of the aurora shines in a video released recently by the European Space Agency.
A guide who helps tourists see auroras in Sweden recently captured jaw-dropping views of the northern lights himself, showing the ethereal lights dancing above a snowy landscape.
Space radiation may be a bigger worry for voyaging astronauts than scientists had thought, at least in the near future, a new study suggests.
A group of citizen scientists helped to discover a new type of aurora named "Steve," and now NASA wants your help photographing the unusual phenomenon.
New work helps to codify the cause and properties of "Steve," an aurora-like phenomenon documented by citizen scientists as it streaked across the sky in western Canada.
A minor solar storm will reach Earth Wednesday (March 14) and could supercharge the planet's auroras, making them visible from the northernmost parts of the U.S., space weather officials say.
Thanks to a solar storm, the northern part of North America may see a dazzling auroral display tonight.
A moderate solar flare early this week has generated charged particles that will light up the atmosphere — and could impact power grids and satellites — as early as Thursday.
The origins of "pulsating auroras" — intense flickering displays of light high up in Earth's atmosphere — are now revealed after a decades-long hunt, a new study finds.
The sun may be dimming, temporarily. Don't panic; Earth is not going to freeze over. But will the resulting cooling put a dent in the global warming trend?
New research may have identified an early warning sign of how powerful explosions from the sun might get, shedding light on whether they could damage communication satellites and power grids.
A long-lost-but-recently-rediscovered NASA satellite appears to have a fully charged battery and is "in good shape" overall, the agency said in an update yesterday (Feb. 5).