unit 3 space

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Across
  1. 2. a collection of stars dust and gas bound together by gravity
  2. 7. a gigantic explosion in which a massive star collapses and throws its outer layers
  3. 10. Spectrum all of the frequencies or wavelength of electromagnetic radiation
  4. 11. Diagram Hertzsprung Russell diagram a graph that shows the relationship between a star surface temperature and absolute magnitude
  5. 12. Dwarf a small hot dim star that is the leftover center of an old sun like star
Down
  1. 1. a large cloud of gas and dust in interstellar space a region where stars are born
  2. 3. Magnitude the brightness of a star as seen from Earth
  3. 4. Magnitude a measure of how bright a star would be if it were seen from standard distance
  4. 5. the actual brightness of an object such as a star
  5. 6. space and all the matter and energy in it
  6. 8. Star a star that has collapsed under gravity to the point that the electrons and protons have smashed together to form neutrons
  7. 9. Year the distance that light travels in a year about 9.46 trillion kilometers