The Bug, or Butterfly Nebula looks like a butterfly with its wings stretching across the galaxy. It's actually a cloud of roiling gas shed by a dying star. Scientists say the gas is more than 36,000 degrees Fahrenheit and is expanding into space at more than 600,000 miles an hour. This image was taken with Hubble's Wide Field Camera 3, a camera installed on Hubble during its May 2009 upgrade by shuttle astronauts. The nebula is about 3,800 light years away in the constellation Scorpius.