In a galaxy far away, an old star exploded and became a supernova. About 170 million years later on Feb. 4, 2018, the light emanating from the explosion was received by an arsenal of high-powered telescopes.
In a galaxy far away, an old star exploded and became a supernova. About 170 million years later on Feb. 4, 2018, the light emanating from the explosion was received by an arsenal of high-powered telescopes.