Clone of Star Life Cycle - Earth Science Class

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Across
  1. 3. the element that is the main source of fuel for main sequence stars
  2. 5. what a white dwarf will become after it no longer gives off light; scientists say that the universe isn't old enough for these to form yet
  3. 6. a small, dense star made of of neutrons; what the leftovers of a supermassive star can turn into
  4. 7. a stellar explosion that can occur after the core of a massive star collapses
  5. 9. this element is known as the "star killer" because it cannot fuse with something else to create energy
  6. 10. the leftover core of a smaller star after its red giant phase
  7. 11. this is the element that is created when hydrogen undergoes fusion
  8. 12. stars that burn hydrogen fuel in their cores and are relatively stable; most stars, including our sun, are in this group
Down
  1. 1. an early stage in a star's life where fusion begins
  2. 2. a large star that has expanded and cooled after it has burned the hydrogen fuel in its core; the next stage our sun will become
  3. 4. a large cloud of gas that is created when
  4. 5. an area of space that has such a strong gravitational field that no matter or even light can escape
  5. 8. outer layers of a red giant drift off into space
  6. 13. cloud of dust and gas in space that are star nurseries