Hidden beneath Chamber A at the Johnson Space Center is an area engineers used to test critical contamination control technology that has helped keep our James Webb Space Telescope clean during cryogenic testing. via NASA http://ift.tt/2gjAzIb
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Hubble Sees Swarm of Galaxies
This NASA Hubble Space Telescope image features the galaxy cluster MACS0329-0211. via NASA https://ift.tt/Ic3DOZy
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