"Red Geyser" Galaxies Have Plenty of Star-Forming Gas But Don't Form Stars
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"Red Geyser" Galaxies Have Plenty of Star-Forming Gas But Don't Form Stars

Red Geysers are an unusual class of galaxy that contain only old stars. Despite having plenty of star-forming gas, Red Geysers are quenched. Astronomers have mapped the flow of gas in these galaxies and figure out why they're dormant.