Vocabulary Tests Available for:
"Astronomy Ch.12 (The milky way galaxy)"

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Words
bottom-up hypothesis
calibrate
central bulge
cepheid variable star
dark matter
density wave theory
disk component
flocculent
galactic corona
grand design
halo
instability strip
keplerian motion
kiloparsec (kpc)
metals
monolithic collapse (top-down) hypothesis
nucleosynthesis
period-luminosity relation
population 1 stars
population 2 stars
proper motion
rotation curve
rr lyrae variable star
sagittarius a*
self-sustaining star formation
spherical component
spiral density wave theory
spiral tracer