NASA sees black hole pair 'photobombing' Andromeda galaxy
NASA has shared an image of a "cosmic photobomb", where a pair of supermassive black holes is seen in the background of the nearby spiral galaxy Andromeda. While the galaxy is located about 2.5 million light-years from Earth, new data from NASA's Chandra X-ray Observatory revealed the black holes, earlier classified as stars in Andromeda, were 2.6 billion light-years away.