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Jun 19, 2017 - Houston, Texas, U.S. - NASA's James Webb Space Telescope sits in front of the door to Chamber A, a giant thermal vacuum chamber located at NASA's Johnson Space Center. The telescope will soon be moved into the chamber, where it will spend a hot Houston summer undergoing tests at sub-freezing cryogenic temperatures. The telescope will operate below an extremely cold 50 K (-223? C or -370? F) in space, so NASA is simulating those conditions on the ground, ensuring the optics and instruments will perform perfectly after launch. The James Webb Space Telescope is the scientific successor to NASA's Hubble Space Telescope. It will be the most powerful space telescope ever built. (Credit Image: ? Desiree Stover/NASA via ZUMA Wire/ZUMAPRESS.com)

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Daily Round Up 21 June 2017
Jun 19, 2017 - Houston, Texas, U.S. - NASA's James Webb Space Telescope sits in front of the door to Chamber A, a giant thermal vacuum chamber located at NASA's Johnson Space Center. The telescope will soon be moved into the chamber, where it will spend a hot Houston summer undergoing tests at sub-freezing cryogenic temperatures. The telescope will operate below an extremely cold 50 K (-223? C or -370? F) in space, so NASA is simulating those conditions on the ground, ensuring the optics and instruments will perform perfectly after launch. The James Webb Space Telescope is the scientific successor to NASA's Hubble Space Telescope. It will be the most powerful space telescope ever built. (Credit Image: ? Desiree Stover/NASA via ZUMA Wire/ZUMAPRESS.com)