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  • The space shuttle Discovery lifts off from Kennedy Space Center on April 24, 1990, carrying the Hubble Space Telescope into orbit.

    The space shuttle Discovery lifts off from Kennedy Space Center on April 24, 1990, carrying the Hubble Space Telescope into orbit. (Photo credit: NASA)

  • Hubble image of the Aphelion Cloud Belt on Mars, March 30, 1997. The enhanced appearance of the water-ice clouds in the blue-filter view on the right reveals the near-global extent of the clouds, altering the long-held assumption that dust in the atmosphere was driving the climate.

    Hubble image of the Aphelion Cloud Belt on Mars, March 30, 1997. The enhanced appearance of the water-ice clouds in the blue-filter view on the right reveals the near-global extent of the clouds, altering the long-held assumption that dust in the atmosphere was driving the climate. (Photo credit: P. James, T. Clancy, S. Lee, NASA.)

  • Hubble images of a relatively clear Martian atmosphere (left, June 26, 2001) becomes choked by a global dust storm (right, September 24, 2001). (Photo credit: J. Bell, M. Wolff, Hubble Heritage Team (STScI/AURA))

    Hubble images of a relatively clear Martian atmosphere (left, June 26, 2001) becomes choked by a global dust storm (right, September 24, 2001). (Photo credit: J. Bell, M. Wolff, Hubble Heritage Team (STScI/AURA))

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