Life Cycle of Stars and HR diagram

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Across
  1. 3. refers to the size or extent of something
  2. 5. a series of star types to which most stars belong, represented on a Hertzsprung–Russell diagram as a continuous band, that goes from left to right
  3. 6. a region of space having a gravitational field so intense that no matter or radiation can escape.
  4. 8. a very large star of high luminosity and low surface temperature
  5. 9. a star that forms from the explosions of other stars
  6. 10. an interstellar cloud of dust, hydrogen, helium and other ionized gases, that is used to form stars
Down
  1. 1. Astronomers use the HR diagram to either summarise the evolution of stars, or to look at the properties of stars.
  2. 2. a star that unexpictedley increases greatly in brightness because of a catastrophic explosion that ejects most of its mass
  3. 4. a reaction when two or more atomic nuclei come close enough to form one or more different atomic nuclei and subatomic particles
  4. 7. a contracting mass of gas that shows an early stage in the formation of a star, before nucleosynthesis has begun