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NASA's long-running James Webb Infinite Telescope projection is nearing completion, but it needs a lot of testing before the agency sends it up into space where whatsoever undetected issues could prove disastrous. Several months ago, the completed telescope optical hardware was loaded into a vacuum bedroom and cooled to extremely low temperatures. After removing Webb from the deep freeze, NASA now reports that all systems are become.

About $10 billion has been spent building the James Webb Space Telescope, but the construction phase was finished way back in late 2022. Since then, NASA has been conducting tests on the hardware to ensure it will operate correctly one time in space. It would plain like to avoid a repeat of Hubble's launch, which required a Space Shuttle mission to right its blurry vision in the early 90s. Withal, Webb will be much farther away than Hubble at the Earth-Sun L2 Lagrangian point.

Webb will be subjected to frigid temperatures at the L2 Lagrangian betoken, so the deep freeze test is a necessary step before launch. Engineers loaded the telescope into Chamber A at Johnson Space Center, which was depressurized and cooled to nearly absolute zero (twenty-xl Kelvin). First on the agenda, NASA tested to make certain the 18 individual mirror segments would motion and operate every bit a single unit in a cold vacuum — they worked perfectly. Adjacent, the guidance system underwent testing. The team simulated the light of a distant star and told the telescope to track it. Webb's sensors were able to spot the false star and follow it as it moved.

This stage of testing ended in late 2022 every bit the telescope was removed from the vacuum chamber, simply the results give NASA confidence all the optical systems volition piece of work correctly in space. However, there's still more testing to practice. While structure of the Webb is complete, the hardware isn't all integrated even so. The telescope's adjacent stop is Northrop Grumman'southward facilities in Los Angeles. That's where the optical component volition bring together the main spacecraft body.

A render of Webb's final configuration.

Engineers will go over the systems to ensure the sunshield deploys properly. Over 180 components need to work perfectly for the sunshield to deploy, and that's essential to the mission. The shield protects Webb from the heat of the dominicus, allowing it to take more accurate mid-infrared readings. Scientists will also exam that the hardware can survive the vibration associated with launch.

The James Webb Space Telescope will eventually make its mode to French Guiana for launch aboard an ESA Ariane 5 rocket. That should happen in Leap 2022 if at that place are no delays.