Thanks to the Hubble telescope, astronomers know our universe is about 13.7 billion years old and that many galaxies host supermassive black holes ... took of the Dumbbell Nebula, or M76, which ...

NASA images by Hubble space telescope This NASA image of Dumbbell Nebula is enough to leave you ... cluster in the skyandmight also host a black hole. The image helped NASA Hubble detect seven ...