The Conversation

Giant galaxies die from the inside when they stop making stars

Author: The Conversation

Elliptical galaxies, like this one, are burnt out and no longer making stars.Judy Schmidt and J Blakeslee (Dominion Astrophysical Observatory), CC BY-SA

Galaxies are star factories. But for some, such as massive elliptical galaxies, their star-forming days are now over. All of their available gas has already been turned into more than a hundred...

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