NASA has released a new composite image of two spiral galaxies, NGC 2207 and IC 2163, as they begin a multi-billion-year ...

The cosmos has delivered a rare kind of fireworks display, and astronomers are racing to understand what it means. A strange double flash from a distant galaxy appears to show two neutron stars ...

While surveying distant worlds beyond our solar system, researchers unexpectedly obtained the first direct images showing ...

When two neutron stars collide, they unleash some of the most powerful forces in the universe, creating ripples in spacetime, showers of radiation, and even the building blocks of gold and platinum.

For only the second time ever, a collision between two asteroids has been observed around an alien star not too far beyond the Solar System's borders. That star is Fomalhaut, a mere cosmic baby at ...