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NASA engineer Ernie Wright looks on as the first six flight-ready primary mirror segments for the James Webb Space Telescope are prepped to begin final cryogenic testing at the Marshall Space Flight Center. Intended to serve as a replacement for the Hubble Space Telescope and the Spitzer Space Telescope, the James Webb Space Telescope is currently under construction and scheduled to launch in October 2018. It is expected to enable a broad range of investigations across the fields of astronomy and cosmology. Photograph: NASA/MSFC/David Higginbotham Recently featured:
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from Wikipedia picture of the day feed http://ift.tt/2bz4yJy
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