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US - SPACE - TELESCOPE
US - SPACE - TELESCOPEThis NASA photo released on May 16, 2017 shows the primary mirror of NASA’s James Webb Space Telescope inside a cleanroom at NASA’s Johnson Space Center in Houston,Texas where it will undergo its last cryogenic test before it is launched into space in 2018. In preparation for testing, the “wings” of the mirror (which consist of the three segments on each side) were spread open. This photo shows one fully deployed wing, and one that is moments from being fully deployed. An engineer observes the move.The James Webb Space Telescope is the world’s most advanced space observatory. It is designed to unravel some of the greatest mysteries of the universe, from discovering the first stars and galaxies that formed after the big bang to studying the atmospheres of planets around other stars.Chris GUNN / NASA / AFP
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