Some of the universe's most extreme explosions leave behind almost no trace. The original explosion is unseen, but our observations can capture the long-lived echo it leaves behind as the shock front ...

For centuries, scientists have studied supernovae mostly after the damage was already done, looking at remnants long after the original explosion disappeared. But in April 2024, the ATLAS survey ...

A new study from NASA reveals that a supernova observed nearly two millennia ago expanded inside a pre-formed cosmic cavity, offering strong evidence about the type of stellar explosion that created ...