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How the Universe Works
S01 E03 / GALAXIES
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EP 01
BIG BANG
EP 02
BLACK HOLES
EP 03
GALAXIES
EP 04
STARS
EP 05
SUPERNOVAS
EP 06
PLANETS
EP 07
SOLAR SYSTEMS
EP 08
MOONS
GALAXIESThe evolution of galaxies, from clouds of cold gas floating in space 13 billion years ago, to the vast gravitationally bound systems of today.
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