"We do not know with certainty that we found a superkilonova, but the event nevertheless is eye-opening." When you purchase through links on our site, we may earn an affiliate commission. Here’s how ...

Swift observations with the European Southern Observatory's Very Large Telescope (ESO's VLT) have revealed the explosive death of a star just as the blast was breaking through the star's surface. For ...

A dozen luminous blue outbursts were thought to be unusual supernovae. A new outburst, the brightest yet, suggests it's ...