Related terms:
cmb
ngc
cobe
hubble
redshift
spiral
galaxies
night sky
galaxy
spiral arms
big bang
milky way
supercluster
barred spiral
spiral nebulae
rotation curve
distance
spiral galaxies
milky way galaxy
andromeda galaxy
globular cluster
elliptical galaxy
discovered
albert einstein
general relativity
Wikipedia sources:
Galaxy
Milky Way
Big Bang
Edwin Hubble
Light pollution
List of galaxies
Context for words:
nebulae
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