World's Biggest Space Telescope Heads West on Path to Launchpad

The James Webb Space Telescope is on the road again. After passing its final test at NASA’s Goddard Space Flight Center in Greenbelt, Maryland, the megatelescope is ready for the next stop on its trip to space: further testing at Johnson Space Center in Houston.

The final mirrors for the giant space observatory arrived at Goddard in 2014, and the telescope’s construction was finally completed in November 2016, after more than 20 years of construction.

The final test at Goddard checked the curvature of the telescope’s mirrors to see whether they had become warped during the year of intensive testing.
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whats the total cost of this project?

I hope it will perfom better than Hubble