Something HUGE is unfolding for NASA's James Webb Space Telescope. In a recent test, the spacecraft fully deployed its iconic primary mirror into the same configuration it will have in space. Why this test is key to a successful mission: https://go.nasa.gov/2JLZuTP | NASA - National Aeronautics and Space Administration

11K views · 279 reactions | Watch as the James Webb Telescope heads into deep space. Webb will soon begin a two-week process to deploy its antennas, mirrors, and sunshield. The first part of the video is a reenactment, while the latter portion is actual footage. | CNET | Facebook