An old NASA science satellite is no more. The U.S. Space Force says the Van Allen Probe A plunged uncontrolled from orbit on Wednesday, reentering over the Pacific west of the Galapagos Islands.

In the journal Science Advances, scientists in Sweden and the U.S. report the first-ever direct observation of a type of short-lived molecule that has shaped decades of thinking in atmospheric ...

Astronomers have caught what may be a rare cosmic catastrophe unfolding 11,000 light-years away. A seemingly ordinary ...

Deep canyons in the Andes are the perfect location to catch the most energetic particles in the universe. Carlos ...

Astronomers have witnessed evidence of an extremely violent collision between planets, and it resembles the event in Earth's history that created the moon.

This violent fate is rare: fewer than about 1% of stars are big enough to end their lives this way. Indeed, these dramatic explosions only occur in so-called “massive stars”. These are stars with a ...

Zodiacal light, for example, makes you wait – and once it’s arrived, you still have to work for it. The zodiacal band is even ...