Contact: Janet Rettig Emanuel
Caption: This illustration shows the comparative sizes of our Milky Way Galaxy and an ultracompact galaxy, which existed in the early universe. Although the compact galaxy is only a fraction of the size of our Milky Way, it contains the same number of stars. The small, dense galaxy could fit inside the central hub of our Milky Way.
Credit: NASA, ESA, A. Feild (STScI) and P. van Dokkum (Yale)
Usage Restrictions: with credit given
Related news release: Ultra-dense galaxies found in early universe