Space

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