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 ...

In a cosmic fireworks display, scientists have observed two objects colliding around a bright star 25 light-years from Earth.

The world's first-ever detection of two faraway neutron stars colliding, causing a massive blast that rippled through the fabric of space and time, is judged the scientific breakthrough of 2017.

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

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