Related terms:
ngc
bulge
parsec
galaxia
nebulae
spheroid
spiral arms
solar mass
dwarf galaxy
two galaxies
supercluster
spiral galaxy
barred spiral
spiral nebulae
massive stars
rotation curve
star formation
andromeda galaxy
hubble sequence
spiral galaxies
radio astronomy
globular cluster
galaxy formation
milky way galaxy
sagittarius dwarf
satellite galaxies
clusters of galaxies
spitzer space telescope
supermassive black hole
astronomy and astrophysics
Wikipedia sources:
Galaxy
Globular cluster
Astronomy
Milky Way
Spiral galaxy
Local Group
Andromeda Galaxy
Context for words:
elliptical
galaxy
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