Here’s how it works. Astronomers have discovered something surprising about the universe's smallest and faintest class of galaxies: Ultra-Diffuse Galaxies (UDGs). A research team studying these ...
A Hubble Space Telescope study takes a close look at the dwarf galaxies surrounding Andromeda. Credit: NASA / ESA / J. Dalcanton / B.F. Williams / L.C. Johnson / PHAT team / R. Gendler Surrounding ...
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