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Learn about telescopes, how they work & why they're important to astronomers.
Hubble Space Telescope as seen during a servicing mission in 2009 (NASA)
Learn about the history of telescopes and the function of refracting and reflecting optical telescopes.
Learn about radio astronomy, a type of astronomy that studies objects in space using radio waves and radio telescopes.
When astronomers search for extraterrestrial life, they often have to listen for radio waves coming from deep space. If you’re interested, you can help!