From CNN:
Although it looks a bit like an eerie, floating face suspended in space, the optical illusion spotted by the Hubble Space Telescope is really the result of two galaxies colliding.
Hubble took the image in June as part of its snapshot program, using gaps in its observation schedule to take photos of other intriguing targets. The two glowing eyes of the face each represent the center of a galaxy. Young blue stars help make up the outline of the face, while other groupings of new stars seem to sketch out a mouth and nose.