This image really puts into perspective how unbelievably vast our universe is.

Each of the thousands of dots in this image is an entire galaxy containing billions of stars, revealed in a region of space called the Lockman hole, which allows a clear line of sight out into the distant universe, as seen by the Herschel Space Observatory.

Sadly, Herschel’s time has come to an end. http://bit.ly/ZJ2QdY