Hubble's Extreme Deep Field- Called the eXtreme Deep Field, or XDF, the photo was assembled by combining 10 years of NASA Hubble Space Telescope photographs taken of a patch of sky at the center of the original Hubble Ultra Deep Field.
Phil Plait: "We humans, our planet, our Sun, our galaxy, are so small as to be impossible to describe on this sort of scale, and that’s a good perspective to have. But never forget: we figured this out... And it all started with simply looking up. Always look up, every chance you get. There’s a whole Universe out there waiting to be explored."