Astronomy

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Across
  1. 2. relating to the eyes
  2. 5. a building used by astronomers to explore space from Earth's surface
  3. 6. radiation occurs on an _____________________ spectrum
  4. 9. radio and microwave radiation are examples of ______ wavelength energy
  5. 10. x-rays and gamma rays are examples of _______ wavelength radiation
Down
  1. 1. the larger the ______________ of the telescope lens, the more stars astronomers can see
  2. 3. energies and wavelengths that enter the Earth from outer space is called ________________
  3. 4. _____________ distort and filter the radiation that enters the Earth
  4. 7. _______________ means objects from Space
  5. 8. the life-sustaining layer of the Earth that separates it from space