Unit 3vocabulary

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Across
  1. 5. The brightness of a star as seen from earth
  2. 6. all of the frequencies or wavelengths of electromagnetic radiation
  3. 7. Space at all the matter and energy and it
  4. 8. A collection of stars dust and gas found together by gravity
  5. 9. A measure of how bright star would be if it were seeing from a standard distance
  6. 12. hey star that it has collapsed under gravity to the point that electrons and protons have smashed together to form a neutron
Down
  1. 1. Russell diagram a graph that shows the relationship between a stars surface temperature and absolute magnitude
  2. 2. A gigantic explosion in which a massive star collapses and throws it outer layer to space
  3. 3. The distance that light travels in a year
  4. 4. large cloud of dust and gas in interstellar space
  5. 10. The actual brightness of an object such as a star
  6. 11. A small hot dim star that is left over center of an old sun like star