Astronomers using NASA’s NuSTAR telescope array have found something beautiful about 12 million light-years from our planet Earth: The brightest dead star, or pulsar, ever found. It’s only called a dead star because it’s the leftovers from a supernova — this thing is still very much alive, pumping out around 10 million suns’ worth of energy, according to NASA. Scientists originally thought the pulsar, located in the Messier 82 galaxy, was a black hole, but it turns out that isn’t the case at all.
“You might think of this pulsar as the ‘Mighty Mouse’ of stellar remnants,” said Fiona Harrison, the NuSTAR principal investigator at the California Institute of Technology in Pasadena, California, in a NASA release about the pulsar. “It has all the power of a black hole, but with much less mass.”