Unit 3

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Across
  1. 5. space and all the matter and energy in it
  2. 7. magnitude-a measure of how bright a star would be if seen from a standard distance
  3. 8. Diagram-Hertzsprung-Russel Diagram
  4. 9. star-a star that has collapsed under gravity
  5. 12. of the frequencies or wavelengths or electromagnetic radiation
Down
  1. 1. magnitude-the brightness of a star as see from earth
  2. 2. gigantic explosion in which a massive star collapses
  3. 3. year-the distance that traveled in a year
  4. 4. large cloud of gas and dust in interstellar space
  5. 6. the actual brightness of an object such as a star
  6. 10. dwarf-a small hot dim star that is left over
  7. 11. a collection of stars, dust and gas bound together by gravity