Scientists using the NASA/ESA Hubble Space Telescope have found faint chemical traces of our Milky Way Galaxy lurking inside the Smith Cloud, a gigantic streamer of hydrogen gas that will crash into the Galactic disk in about 27 million years. This composite image shows the size and location of the Smith Cloud on the sky. The cloud is 15 degrees across in angular size – the width of an outstretched hand at arm’s length. The apparent size of...
