Unit 3 Vocabulary- Space

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