The record-setting cosmic outburst was actually a gamma-ray burst, the most powerful class of cosmic explosions.

Astronomers may have discovered the first example of an explosive cosmic event called a "superkilonova," in the form of a gravitational wave signal detected on Aug. 18, 2025.

But in this case, the companion is officially considered an exoplanet, not a star. The International Astronomical Union ...

NASA has unveiled a breathtaking new image showing what appears to be a massive “cosmic hand” stretching across 150 light-years of space, created by one of the galaxy’s most powerful electromagnetic ...