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Spectrum-luminosity Diagram
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Thesaurus
Beehive
Cepheid variable
Hertzsprung-Russell diagram
Hyades
Messier catalog
NGC
POW camp
Pleiades
Seven Sisters
absolute magnitude
bastille
binary star
borstal
borstal institution
bridewell
brig
cell
concentration camp
condemned cell
death cell
death house
death row
detention camp
double star
dwarf star
federal prison
fixed star
forced-labor camp
gaol
giant star
globular cluster
gravity star
guardhouse
house of correction
house of detention
industrial school
internment camp
jail
jailhouse
keep
labor camp
lockup
magnitude
main sequence star
mass-luminosity law
maximum-security prison
minimum-security prison
neutron star
nova
open cluster
oubliette
pen
penal colony
penal institution
penal settlement
penitentiary
populations
prison
prison camp
prisonhouse
pulsar
quasar
quasi-stellar radio source
radio star
red giant star
reform school
reformatory
relative magnitude
sky atlas
spectrum-luminosity diagram
sponging house
star
star catalog
star chart
star cloud
star cluster
state prison
stellar magnitude
stockade
supernova
the hole
tollbooth
training school
variable star
white dwarf star
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