NGC 6240: A galaxy about 330 million light years from Earth
Caption: NGC 6240 is a system in which two supermassive black holes are a mere 3,000 light years apart. These black holes (the two bright point-like sources in the middle) are in such close proximity, scientists think, because they are in the act of spiraling toward each other -a process that began about 30 million years earlier. It is estimated that the two black holes will eventually drift together and merge into a larger black hole some tens to hundreds of millions of years from now. This image of NGC 6240 contains new X-ray data from Chandra (shown in red, orange, and yellow) that has been combined with an optical image from Hubble.
Scale: Image is
124 arcmin across.
Chandra X-ray Observatory