Ultra Deep Field: Looking Out into Space, Looking Back into Time

This sixminute visual exploration of the Hubble Ultra Deep Field showcases the characteristics and contents of this landmark observation, as well as its threedimensional nature across both space and time. In particular, galaxies are seen to more than 12 billion lightyears away, 12 billion years ago, allowing astronomers to trace the development of galaxies across cosmic time. A deep field is a long exposure on a small field of view to observe the faintest objects possible. The Ultra Deep Field (UDF) re