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The free space screensaver, The Hubble Space Telescope Part 1, contains 21 of the top 100 images taken by the Hubble Space Telescope. The Hubble Space Telescope (HST) is a telescope in orbit around the Earth, named after astronomer Edwin Hubble. Its position outside the Earth's atmosphere provides significant advantages over ground-based telescopes - images are not blurred by the atmosphere, there is no background from light scattered by the air, and the Hubble can observe ultra-violet light that is normally absorbed by the ozone layer in observations made from Earth. The, The Hubble Space Telescope Part 1 screensaver, is a free screensaver created by FeaturedScreensavers.com.