Engineers commanded the James Webb Space Telescope to unfurl its over 21-foot wide golden mirrors this week, and the crucial test .
The test, shown in the image below, was the last check on the sprawling telescope’s moving parts under space-like conditions. James Webb, set to launch in Oct. 2021, is the largest, most powerful space telescope ever built. It’s the next generation of space telescope, furthering the .
After launching into space, Webb’s 18 hexagonal mirrors will align to form a “single, precise mirror,” NASA engineer Lee Feinberg said in a statement. “The primary mirror is a technological marvel,” Feinberg said.
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