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the blue-white hot core of a star that is left behind after its outer layers have expanded and drifted out into space
protostar
10 million years
big bang
supernova
white-dwarf
absolute brightness
10 billion years
light-year
the brilliant explosion of a dying supergiant star
protostar
10 million years
big bang
supernova
white-dwarf
absolute brightness
10 billion years
light-year
how long do medium mass stars last?
protostar
10 million years
big bang
supernova
white-dwarf
absolute brightness
10 billion years
light-year
how long do large mass stars last?
protostar
10 million years
big bang
supernova
white-dwarf
absolute brightness
10 billion years
light-year
a contracting cloud of gas and dust with enough mass to form a star
protostar
10 million years
big bang
supernova
white-dwarf
absolute brightness
10 billion years
light-year
the brightness a star would be if it were at a standard distance from Earth
protostar
10 million years
big bang
supernova
white-dwarf
absolute brightness
10 billion years
light-year
the initial explosion that resulted in the formation and expansion of the universe
protostar
10 million years
big bang
supernova
white-dwarf
absolute brightness
10 billion years
light-year
the distance that light travels in one year
protostar
10 million years
big bang
supernova
white-dwarf
absolute brightness
10 billion years
light-year
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