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JWST have propellant for 20 years instead of 10


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William Harwood on Twitter: A very interesting update from Mike Menzel, NASA mission systems engineer: thanks to the accuracy of the Ariane 5 launch and two ultra-precise trajectory correction burns, Webb should have enough propellant, roughly speaking, to operate "around 20 years".

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With the successful deployment and latching of its last mirror wing, the James Webb Space Telescope is now fully deployed! Congrats to the JWST team!