Some 13,000 years ago, the sun emitted a huge belch of radiation that bombarded Earth and left its imprint in ancient tree rings. That solar storm was the most powerful one ever recorded. The next ...

NASA's Perseverance rover is exploring a new Mars region called Krokodillen, which is thought to harbor some of the oldest and most intriguing rocks on the Red Planet. Seattle startup Interlune's ...

Southwest Research Institute scientists have discovered how solar activity affects the velocity distribution and evolution of ...

A solar flare is a burst of radiation on the sun, according to NASA. They are the most powerful explosions in the solar system, with the biggest ones having as much energy as a billion hydrogen bombs.