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    Solar Array Deployed

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

    At approximately 30 minutes after launch, Webb's solar array began to open up. It is now fully deployed and we have confirmed that the spacecraft is power positive.

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    Upper Stage Separation

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

    The Ariane 5 upper stage brought the James Webb Space Telescope up to a speed of approximately 22 thousand miles per hour – headed for its final orbit around the second Lagrange point, commonly known as L2. The upper stage engine has now cut off and the spacecraft has separated. An extra battery on the …

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    Main Stage Separation

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

    After exhausting all its fuel and bringing Webb to speeds of approximately 16 thousand miles per hour, the main stage engine of the Ariane 5 has shut down and been jettisoned. The upper stage engine has ignited. It will burn for approximately 16 minutes, beginning Webb on its journey to its final orbit around the …

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    Webb Telemetry Received

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

    Telemetry from the James Webb Space Telescope has successfully been received at the Jupiter Control Center at Europe's Spaceport in French Guiana. A little more than two minutes after launch, the two solid rocket boosters on the Ariane 5 separated from the vehicle and then fell back into the ocean. Next, the fairing — which …

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    Lift off!

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

    The boosters have ignited, and we have liftoff! The Ariane 5 launcher carrying NASA's James Webb Space Telescope launched into space at 7:20 am EST from Europe's Spaceport in French Guiana.

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    Webb Mission Moving to Automated Countdown Activities

    Webb has completed internal checks. All ground stations and the spacecraft are go for launch. Spacecraft and launch engineers at the Jupiter Control Center at Europe's Spaceport in French Guiana and at the Mission Operations Center at the Space Telescope Science Institute in Baltimore, Maryland, have confirmed that Webb is on internal battery and is …

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    Ariane 5 Fueling is Complete

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

    Fueling for both the main and upper stages of the Ariane 5 rocket is now complete. In preparation for launch scheduled for no earlier than 7:20 am EST (9:20 am GFT). The cryogenic arms attached to the Ariane 5 are now supplying top-up fuel until liftoff. All systems are being continually measured to monitor the readiness …

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    We Are Go For Launch!

    Launch teams wearing Santa hats monitor the Webb telescope countdown from a control room.

    Webb has been confirmed as being go for launch, and the countdown clock was started! With weather reports looking favorable, the team authorized fueling of the Ariane 5, which began at 3 am EST. Arianespace will measure winds at high altitude with the help of balloons to ensure absolute safety for the launch. Meanwhile the …

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    Key Milestones After Liftoff

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

    Both immediately after launch and over the following weeks, the James Webb Space telescope will pass through numerous milestones on its journey of approximately 1 million miles to its final orbit around the second Lagrange point, commonly known as L2. NASA has a detailed plan to deploy the Webb Space Telescope over a roughly two-week …

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    Favorable Weather Expected for Dec. 25 Launch

    Arianespace's Ariane 5 rocket with NASA's James Webb Space Telescope onboard, is shown at the launch pad.

    The latest weather forecast has arrived and we are still go for launch tomorrow! The target launch date for the James Webb Space Telescope is Dec. 25. A 32-minute launch window opens at 7:20 a.m. EST in Kourou, French Guiana (9:20 a.m. GFT/12:20 UTC).

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