What would it look like to fly through the distant universe? The video below is a 3-D model of the Hubble Ultra Deep Field (HUDF), one of the most distant fields of galaxies ever imaged. 

Watch here:

Animation Credit: NASA, ESA, F. Summers, Z. Levay, L. Frattare, B. Mobasher, A. Koekemoer and the HUDF Team (STScI)