Stellar vomiting produces dark galaxies, simulations suggest

Supernovas may eject gas, extending dwarfs but leaving them nearly starless

supernovas

PUFF BALLS  Supernovas can stretch out compact galaxies and turn them into ghostly systems (two illustrated here) that are low on stars but as wide as the Milky Way.

A. Di Cintio, C. Brook, NIHAO simulations and Hubble Space Telescope

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