Space Weather

A tiny satellite has started investigating the halo of incredibly hot gas surrounding the Milky Way — and it could help scientists track down the huge amount of missing matter in the universe.

Researchers for the first time recorded the gas giant's vibrating plasma signal to Enceladus. And now you can listen to it too.

New research shows the closest-ever views of features in Jupiter's swirling auroras, revealing the complicated footprints left by its moons Io and Ganymede.

The Earth recently put on a spectacular show for astronauts aboard the International Space Station.

NASA's Magnetospheric Multiscale (MMS) spacecraft has detected magnetic activity occurring in a new and surprising way in the environment of near-Earth space.

Once again, we have Earth's magnetic field to thank for protecting us from our fire-breathing sun.

A newly selected NASA mission should help scientists better understand the bubble that surrounds the solar system, agency officials said.

Soon, two ambitious missions will take us closer to the sun than we've ever gone before, providing invaluable insight into how our star really works.

More than 1.1 million people decided to join William Shatner on an extreme space-exploration enterprise.

Deep in the sun's core, buried under hundreds of thousands of miles of twisting and convecting hydrogen and helium, a nuclear fire rages.

New data on Jupiter's moon Ganymede, coming from a mission 20 years old, highlights the ways in which this very alien moon is surprisingly Earthlike.

A moderate geomagnetic storm kicked up in Earth's skies this morning (April 20), bringing green and rare electric-blue auroras that stretched as far south as Indiana.

Like a ship cruising the seas or a fighter jet going supersonic, astronomic objects also make shock waves through the medium in which they travel.

The nearest exoplanet to Earth may get hit hard by damaging ultraviolet radiation, making it tough for life to survive there, a new study suggests.

NASA's Planetary Science Division Director, Jim Green, talks to solar physicist Nicky Fox about a forthcoming mission to study the Sun's corona.