New Hubble pictures suggest Milky Way fell together

Evidence goes against prevailing galaxy formation scenario

By Ron Cowen, 16:20 PM May 4, 2010

BALTIMORE — A preliminary analysis of elderly stars in the Milky Way appears to strike a blow against the prevailing theory of galaxy formation. The study suggests that several large and seemingly disparate chunks of the Milky Way galaxy formed at the same time from the collapse of a single blob of gas and dust.

That’s in direct contrast to the leading galaxy-formation scenario, which holds that the Milky Way and other galaxies began small and grew bit by bit for the most part, gravitationa...

Source URL: