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Space Telescopes and Astronomy

Space Telescopes and Astronomy. Physics 113 Goderya. Chapter(s): 6 Learning Outcomes:. Space Astronomy. The Hubble Space Telescope. Launched in 1990; maintained and upgraded by several space shuttle service missions throughout the 1990s and early 2000’s.

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Space Telescopes and Astronomy

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  1. Space Telescopes and Astronomy Physics 113 Goderya Chapter(s): 6 Learning Outcomes:

  2. Space Astronomy

  3. The Hubble Space Telescope • Launched in 1990; maintained and upgraded by several space shuttle service missions throughout the 1990s and early 2000’s • Avoids turbulence in the Earth’s atmosphere • Extends imaging and spectroscopy to (invisible) infrared and ultraviolet

  4. NASA’s Space Infrared Telescope Facility (SIRTF)

  5. Infrared Astronomy Most infrared radiation is absorbed in the lower atmosphere. However, from high mountain tops or high-flying air planes, some infrared radiation can still be observed. NASA infrared telescope on Mauna Kea, Hawaii

  6. Ultraviolet Astronomy • Ultraviolet radiation with l < 290 nm is completely absorbed in the ozone layer of the atmosphere. • Ultraviolet astronomy has to be done from satellites. • Several successful ultraviolet astronomy satellites: IRAS, IUE, EUVE, FUSE • Ultraviolet radiation traces hot (tens of thousands of degrees), moderately ionized gas in the Universe.

  7. X-Ray Astronomy • X-rays are completely absorbed in the atmosphere. • X-ray astronomy has to be done from satellites. X-rays trace hot (million degrees), highly ionized gas in the Universe. NASA’s Chandra X-ray Observatory

  8. Gamma-Ray Astronomy Gamma-rays: most energetic electromagnetic radiation; traces the most violent processes in the Universe The Compton Gamma-Ray Observatory

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