NASA's next generation space telescope marks key milestone
Thursday, April 14, 2011 - 16:20
in Astronomy & Space
The first six of 18 segments that will form NASA's James Webb Space Telescope's primary mirror for space observations will begin final round-the-clock cryogenic testing this week. These tests will confirm the mirrors will respond as expected to the extreme temperatures of space prior to integration into the telescope's permanent housing structure.
