‘Supernova sweeping’ cleans up a galaxy’s gas

After black holes quiet star formation, massive explosions put an end to it

Jets of Centaurus A

SPRING CLEANING  Jets erupting from a supermassive black hole, such as the one in Centaurus A (shown in this color composite image), might clear the way for supernovas to sweep out gas and stop star formation.

WFI/ESO (optical); A. Weiss et al/APEX/MPIfR and ESO (submillimeter); R. Kraft et al/CXC/CfA and NASA (x-ray)

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