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cloud of interstellar gas and dust


formed when cloud contracts and forms a disc shape with a hot condensed object at the center

neutron star

formed by collapse of supernovae. Resistance to being squeezed creates pressure that halts collapse of the core, and the core becomes this.


formed when the entire outer portion of a star is blown off in a massive explosion

black hole

small but extremely dense object in which gravity is so intense nothing can escape it, not even light


largest object in the solar system in both size and mass. average density is similar to gas giants.


sun's atmosphere


visible light arranged by wavelengths


groups of stars

binary star

two stars that are gravitationally bound together and orbit a common center of mass

star's temperature, luminosity, and diameter

governed by mass


sun and stars on the main sequence produce energy by pushing hydrogen into helium

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