Not long after the supernova of 1604, the telescope was invented. But astronomers would have to wait nearly FOUR CENTURIES to witness the next supernova that was visible to the naked eye. It was 1987, and a blue supergiant in the Large...

Betelgeuse, Betelgeuse, Betelgeuse. Why were you dimming? Scientists may have finally come up with the answer thanks to data from Hubble.