A new simulation from a NASA supercomputer has revealed how galaxies evolve by eating the gas spread through space around them
When these stars explode as supernovae they blast galactic superwinds out of the galaxy, and these are the less dense hotter gases in the simulation.
"One way to do this is by finding bright sources of light - such as other galaxies - and measuring how these gases absorb that light, to get a glimpse of what's in these hidden areas. Powerful and complicated supercomputer simulations are carried out using the Pleiades supercomputer at the NASA Advanced Supercomputing facility at the Ames Research Centre in Silicon Valley.
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