New evidence suggests that a comet explosion over North America may have triggered a massive wave of destruction nearly ...

Cosmic “touchdown airbursts” — explosions of comets or asteroids above Earth’s surface — may be far more common and destructive than previously thought, according to new research. Unlike ...

NASA has released its longest-ever time-lapse from the Chandra X-ray Observatory, capturing the expanding remains of Kepler’s Supernova, one of the most powerful stellar explosions ever witnessed by ...

A nuclear winter is a theoretical concept, but if the climate scenario expected to follow a large-scale nuclear war, in which smoke and soot from firestorms block sunlight, came to fruition, global ...

Scientists have precisely measured two unstable atomic nuclei that play a crucial role in explosive X-ray bursts on neutron stars. The results reveal faster nuclear reactions than previously thought, ...