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James Webb Space Telescope

    Webb’s Deployable Tower Assembly Extends in Space

    In this illustration, the multilayered sunshield on NASA’s James Webb Space Telescope stretches out beneath the observatory’s honeycomb mirror

    This afternoon, the Webb team successfully extended the observatory's Deployable Tower Assembly (DTA), creating critical distance between the two halves of the spacecraft. The DTA extended about 48 inches (1.22 meters), putting room between the upper section of the observatory, which houses the mirrors and scientific instruments, and the spacecraft bus, which holds the electronics …

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    Webb Team Begins Process of Extending Deployable Tower Assembly

    In this illustration, the multilayered sunshield on NASA’s James Webb Space Telescope stretches out beneath the observatory’s honeycomb mirror

    Shortly after 9:00 a.m. EST today, engineering teams began the process of extending Webb's Deployable Tower Assembly (DTA). When deployed, the DTA will create space between the spacecraft and the telescope, to allow for better thermal isolation and provide room for the sunshield to deploy. This deployment is expected to take six or more hours. …

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    NASA Says Webb’s Excess Fuel Likely to Extend its Lifetime Expectations

    Arianespace's Ariane 5 rocket launches with NASA's James Webb Space Telescope onboard.

    After a successful launch of NASA's James Webb Space Telescope Dec. 25, and completion of two mid-course correction maneuvers, the Webb team has analyzed its initial trajectory and determined the observatory should have enough propellant to allow support of science operations in orbit for significantly more than a 10-year science lifetime. (The minimum baseline for …

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    Aft Sunshield Pallet Deployed

    In this illustration, the multilayered sunshield on NASA’s James Webb Space Telescope stretches out beneath the observatory’s honeycomb mirror

    Webb is beginning to resemble the form it will take when it is fully deployed – now that the mission operations team has successfully deployed and latched into place the observatory's forward and aft Unitized Pallet Structures. The team began working through the deployment of the forward pallet this morning, concluding at approximately 1:21 p.m. …

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    Forward Pallet Structure Lowered, Beginning Multiple-Day Sunshield Deployment

    Webb's final fold test in April 2021

    Early this afternoon the Webb mission operations team concluded the deployment of the first of two structures that hold within them Webb's most unpredictable and in many ways complicated component: the sunshield. The structures – called the Forward and Aft Unitized Pallet Structures – contain the five carefully folded sunshield membranes, plus the cables, pulleys, …

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    Webb’s Second Mid-Course Correction Burn

    In this illustration, the multilayered sunshield on NASA’s James Webb Space Telescope stretches out beneath the observatory’s honeycomb mirror

    At 7:20 pm EST – 60 hours after liftoff — Webb's second mid-course correction burn began. It lasted 9 minutes and 27 seconds and is now complete. This burn is one of three planned course corrections to put the telescope precisely in orbit around the second Lagrange point, commonly known as L2.

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    More Details on Webb’s Launch

    Artist's impression of the James Webb Space Telescope, folded in the Ariane 5 rocket during launch.

    While the team continues to work on unfolding Webb, we take a moment to learn more about the launch from two European Space Agency (ESA) representatives, Daniel de Chambure, Acting Head Ariane 5 Adaptation & Future Missions for ESA and Maurice Te Plate, JWST NIRSpec Systems and AIV Engineer for ESA. They provide details about …

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    More Than You Wanted to Know About Webb’s Mid-Course Corrections!

    An drawing of Webb's orbit around the L2 point.

    On Dec. 25, the Webb team successfully executed the first of three planned orbit corrections to get Webb into its halo orbit around the second Lagrange point, L2. To hear more about these important maneuvers, here is Randy Kimble, the Webb Integration, Test, and Commissioning Project Scientist, at NASA Goddard: In sending the Webb Observatory …

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    Webb Antenna Released and Tested

    In this illustration, the multilayered sunshield on NASA’s James Webb Space Telescope stretches out beneath the observatory’s honeycomb mirror

    Shortly after 10 am EST on Dec. 26, the Webb team began the process of releasing the gimbaled antenna assembly, or GAA, which includes Webb's high-data-rate dish antenna. This antenna will be used to send at least 28.6 Gbytes of science data down from the observatory, twice a day. The team has now released and …

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