Optical astronomy is the study of celestial objects using telescopes and in visible light; all ofthebiggest telescopes on Earthare optical. Infrared light can be detected outside of theEarth’s atmosphere, so by space-based observatories like the Hubble Space Telescope andtheJames Webb Space Telescope. Radio astronomy is the study of the sky in radiofrequencies; radio telescopes detect and amplify radio waves from space.
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Astronomy, Planet, Hubble Space Telescope, James Webb Space Telescope, Radio astronomy