The blast may have been a kilonova — a type of neutron star merger — in the wake of a more traditional supernova.

The universe may have staged a cosmic double act, an explosion within an explosion, hinting at a new way the heaviest elements are forged. When massive stars die, they explode as supernovae, ...

When you buy through links on our articles, Future and its syndication partners may earn a commission. Credit: Caltech/K. Miller and R. Hurt (IPAC) Astronomers may have discovered the first example of ...

Few spectacles in space are as phenomenal as supernovae, but a "superkilonova" may give them a run for their money. This type of cosmic outburst is thought to arise when a supernova cascades into a ...