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Hubble's replacement put to the test

Hubble’s replacement put to the test

James Webb Space Telescope gets a taste of space in NASA’s vacuum test chamber.

NASA engineer looks at first six flight ready James Webb Space Telescope's primary mirror segments

Hubble’s successor passes milestone

James Webb Space Telescope’s mirrors polished to incredible accuracy.

Engineers and technicians with some of the JWST's mirror segments

Chilly test for new space telescope

NASA’s James Webb Space Telescope completes its first round of cryogenic testing

Space umbrella to protect new telescope

Space umbrella to protect new telescope

Giant new space telescope will need a huge sunshield to keep it cool. Watch the video…

Model brings telescope to life

Model brings telescope to life

Full-size model of NASA’s next telescope wows the crowds. Watch the video…

Artist's impression of the James Webb Space Telescope

Coming soon: Hubble’s successor

Webb Telescope will be almost three times as big as Hubble. Watch the trailer…