Data collected from a once-defunct NASA satellite show that Earth grew two extra radiation belts following a supercharged ...

The temporary belts, one of which still remains, were filled with high-energy electrons and protons and were found by a ...

A NASA satellite that suddenly reappeared after going silent gets credit for the remarkable discovery—a pair of temporary ...

Simpson and Chen ran mathematical models looking at how differently sized Earth-like worlds would have affected the rest of our Solar System. The planet sizes tested were 1 percent of Earth's mass, ...