Observatories, Ground
Astronomers study the universe by measuring electromagnetic radiation—gamma rays, X rays, optical and infrared radiation, and radio waves—emitted by planets, stars,...
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Ground-Based Observatories
The exploration of space is not limited to the flights of astronauts aboard spacecraft and shuttles launched into space by rockets and boosters. That type of space explorati...
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Observatories, Ground
Ground-Based Observatories