Unit 3 Vocabulary 'Space'

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