Cosmic swirly straws: Galaxies fed by funnels of fuel

Computer simulations of galaxies growing over billions of years have revealed a likely scenario for how they feed: a cosmic version of swirly straws. The results show that cold gas -- fuel for stars -- spirals into the cores of galaxies along filaments, rapidly making its way to their "guts." Once there, the gas is converted into new stars, and the galaxies bulk up in mass.

Fuente : http://feeds.sciencedaily.com/~r/sciencedaily/~3/a...