When certain massive stars use up all of their fuel and collapse onto their cores, explosions 10 to 100 times brighter than the average supernova occur.
In examining a layer of seafloor sediment, researchers learned that regular supernovae may not have had much to do with delivering key heavy metals to Earth.
The brightest pulsar ever recorded has been discovered by astronomers using NASA’s Nuclear Spectroscopic Telescope Array, or NuSTAR. Pulsars are also called dead stars because they are what’s left after a supernova explosion, and belong to a class called neutron stars.
In 1934, two physicists came up with a theory that described how to create matter from pure light. But they dismissed the idea of ever observing such a phenomenon in the lab...