Discover - Google+What Lurks Beneath NASA's Chamber A 、。。By NASA Goddard 、。。Hidden below Chamber A at NASA's Johnson Space Center in Houston is an area engineers used to test critical contamination control technology that has helped keep NASA's James Webb Space Telescope clean during cryogenic testing 、。。This voluminous area is called the plenum, and it supports the weight of the chamber above as well as houses some of the cabling and plumbing for it . Before Webb's cryogenic testing in the chamber commenced, engineers ventured to the plenum's depths to test NASA- developed technology designed to remove molecular contaminants from the air 、。。Catching contaminants 、。。Nithin Abraham, a coatings engineer at NASA's Goddard Space Flight Center in Greenbelt, Maryland, is part of a contamination control team tasked with ensuring Webb remains as clean as possible during its testing in Chamber A . Abraham developed and tested a highly permeable and porous material called molecular adsorber coating (MAC), which can be sprayed onto surfaces to passively capture contaminants that could be harmful to Webb's optics and science instruments 、。。Read more: - https: //www. For more information about NASA's Webb telescope, visit: - www.

Read more about how we are keeping Chamber A free of contaminants: -https: //www. Watch Air America Online Ibtimes there. Credit: NASA’s Goddard Space Flight Center/Mike Mc.

Clare 、。。Aligning the Primary Mirror Segments of the James Webb Space Telescope 、。。By NASA Goddard 、。。https: //photos. UJz. Ckq. XWTZj. Sht. I2. Solar System Documentary、 Collection 、。。https: //plus.

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2. The Boy (2016) Greta is a young American woman who takes a job as a nanny in a remote English village, only to discover that the family's 8-year-old is a life-sized.

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Opowieść o najstarszej rodzinie wampirów na świecie, która zobowiązała się przed wiekami pozostać na zawsze razem. Klaus (Joseph Morgan), pół wampir, pół.