The telescope’s combined science instruments and optical element exits the massive thermal vacuum testing chamber after about 100 days of cryogenic testing inside it. Scientists and engineers at Johnson Space Center put JWST through a series of tests designed to ensure the telescope functioned as expected in an extremely cold, airless environment akin to that of space. Credit: NASA
After much tinkering, Northrop Grumman Aerospace Systems has at last finished the cryogenic cooler that will keep JWST's Mid-Infrared Instrument at its frosty-cool operating temperature of minus 270 Celsius. Credit: NASA artist's concept
Bridenstine Young
The telescope’s combined science instruments and optical element exits the massive thermal vacuum testing chamber after about 100 days of cryogenic testing inside it. Scientists and engineers at Johnson Space Center put JWST through a series of tests designed to ensure the telescope functioned as expected in an extremely cold, airless environment akin to that of space. Credit: NASA
After much tinkering, Northrop Grumman Aerospace Systems has at last finished the cryogenic cooler that will keep JWST's Mid-Infrared Instrument at its frosty-cool operating temperature of minus 270 Celsius. Credit: NASA artist's concept
Bridenstine
After much tinkering, Northrop Grumman Aerospace Systems has at last finished the cryogenic cooler that will keep JWST's Mid-Infrared Instrument at its frosty-cool operating temperature of minus 270 Celsius. Credit: NASA artist's concept
JWST at Northrop Grumman
When NASA announced the completion of the Space Launch System's critical design review Oct. 22, it also released an updated illustration of the rocket, with the core stage now orange instead of white. NASA said in a press release that orange is "the natural color of the insulation that will cover those elements," as was the case with the shuttle's external tank. Not explained in the release, those, are the curved gray and orange stripes on the solid rocket boosters. Some think they are intended to evoke memories of the shuttle itself or the logo of original shuttle contractor Rockwell International — or, perhaps, computer game company Atari. Credit: NASA
GPS 3 satellite (Lockheed Martin)
JWST
NASA’s James Webb Space Telescope emerged from Chamber A at NASA’s Johnson Space Center in December.  (Credit: NASA/Chris Gunn)
After much tinkering, Northrop Grumman Aerospace Systems has at last finished the cryogenic cooler that will keep JWST's Mid-Infrared Instrument at its frosty-cool operating temperature of minus 270 Celsius. Credit: NASA artist's concept
JWST shipment
Ariane 5 launch
Astronauts last serviced Hubble in 2009. Credit: NASA

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