SETI

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Across
  1. 1. Device used to pick up signals from space
  2. 5. The rate of a radio wave’s vibration
  3. 7. The beings SETI is searching for
  4. 9. Massive collection of stars and planets
  5. 10. Type of wave used to detect alien signals
Down
  1. 2. Where signals travel
  2. 3. There are trillions of these in the Milky Way
  3. 4. Galaxy that SETI focuses its search in
  4. 6. Unit of distance between stars
  5. 8. Acronym for “Search for Extraterrestrial Intelligence”