Hubble revealed a universe of galaxies that existed beyond ours — but he couldn't have done it without a little help.

A study carried out by a team of astronomers led by University of Arizona researcher Catherine Fielder has found that smaller ...

It has a mass equal to about 10 million stars the size of our sun ... with what we'd expect for a Milky Way ancestor at that early time. At this stage, the galaxy was about 10,000 times less ...