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Published online 24 February 2000 | Nature | doi:10.1038/news000224-11
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Cosmic dwarfs cook for themselves
Diminutive clusters of stars thrown out of galactic collisions make the ingredients of new stars. Is this how most of the galaxies in the Universe built up their stellar populations, asks Philip Ball?
Observations from a Spanish telescope have provided new insights into how galaxies recycle themselves, cooking their gases into the material needed to make new stars. The results, reported in Nature1, show that new galaxies formed from old ones make their own gas, rather than taking it ready-made from their parent galaxies.
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