It was only last October that telescopes spotted a gamma ray burst—caused by the collapse of a black hole —that was so powerful astronomers quickly dubbed it BOAT, for “Brightest of all Time.” That ...

Astronomers say one of the universe’s largest stars has dramatically changed since 2014, possibly entering a rare final phase that could end in a spectacular supernova explosion.

Artist's rendition of GRB 250702B's ultra-relativistic jet (moving at nearly the speed of light) escaping from its dusty, massive host galaxy. Astronomers at the University of North Carolina at Chapel ...