In the sprawling Hydra constellation, 137 million light-years away, lies NGC 3285B—a dazzling spiral galaxy recently ...

TL;DR: Astronauts on the ISS witnessed SpaceX's Starship upper stage explode due to an "energetic event," losing altitude and communication. Astronauts aboard the International Space Station (ISS ...

Pictures of a distant supernova remnant show two concentric rings, providing clear evidence that exploding white dwarf stars go boom twice in the blink of an eye ...