We know the universe is and always was expanding, but we’ve never really known just how fast it’s happening. That is, until now. Researchers have used gravitational lensing to and watched a star die 5 ...

Five hundred million years following the Big Bang, when the universe was but three percent as old as it is now, a black hole in the CAPERS-LRD-z9 galaxy already had an estimated 300 million times the ...