http://www.newsweek.com/images-galactic-clusters-reveal-early-galaxies-underwent-periods-violent-star-formation-1641668

Images taken using the Hubble Space Telescope have given astronomers clues about the formation and growth of the first galaxies, suggesting that early star formation happened in violent bursts.

A team of astronomers used data collected by Hubble and the ground-based Gran Telescopio CANARIAS (GTC), to observe and investigate some of the smallest and faintest nearby galaxies. They focused on those that resemble galaxies that existed in the early universe.