The last Hubble Ultra Deep Field released in 2014 was observed in ultraviolet. This image allowed astronomers to study star formation in a region 5 to 10 billion light-years away from us. The study is called the Ultraviolet Coverage of the Hubble Ultra Deep Field (UVUDF) project. The addition of ultraviolet data to the Hubble Ultra Deep Field using Hubble's Wide Field Camera 3 gives astronomers access to direct observations of regions of unobscured star formation and may help to fully understand how stars formed.