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7 Cards in this Set

  • Front
  • Back
white dwarf
what an average-sized star becomes at the end of its life
nebula
a huge cloud of gas or dust in space
protostar
the earliest stage in a star's life
supernova
an explosion that occurs at the end of a star's life
neutron star
formed from the leftover material after a giant star explodes, with 3 times the mass of the sun, but only about 20 km
black hole
exerts such a stronf gravitational pull that no electromagnetic radiation can escape
black dwarf
a theoretical astronomical object, constituting the remains of a Sun-sized star which has fused all of its original hydrogen and helium fuel to heavier elements such as carbon, oxygen and nitrogen and subsequently lost its remaining energy due to radiation.