Hubble Telescope Just Saw A Star Vanished Without Exploding — And Why That Should Terrify You

A giant red supergiant has vanished from the sky. Find out how Hubble recorded the moment a huge star seemed to simply disappear. In 2009, astronomers could clearly see a red supergiant about 25 times the mass of our Sun, shining in a galaxy 22 million light-years away. When Hubble was aimed at the same spot in 2015, the star was gone. This video walks through the evidence for the disappearance and explores what may have happened to it. If you love astronomy, this breakdown covers the leading theories on how massive stars evolve and why some may die without the dramatic blast we'd expect. We go through the observation timeline step by step to show why this event is still baffling researchers. Subscribe for weekly space science breakdowns, and tell us in the comments: did the star explode, or did it collapse into a black hole?