![]() Then the rocket fairing is lifted and lowered over top and locked into place, signifying the conclusion of a long journey. ![]() Next, Webb will move to the nearby vehicle integration building to be lifted and mounted on top of the Ariane 5 rocket “stack.” The final few remove-before-flight “red-tag” items are taken off, and a few remaining add-before-flight “green tag” items are installed. A trained crew in special hazmat suits will soon begin the two-week process of loading the spacecraft with the hydrazine fuel and nitrogen tetroxide oxidizer it will need to power its rocket thrusters to maintain its orbit. Then engineers ran a final set of electrical and functional tests and checked the stowed mechanical configuration to ensure delivery went smoothly. These preparations are expected to last 55 days from the observatory’s arrival by ship to the day of launch.Īfter Webb arrived at the Arianespace clean room facilities in French Guiana, contamination control technicians ensured the observatory is clean and contaminant free following its 5,800 mile journey. Now that NASA’s James Webb Space Telescope has safely arrived at its launch site in French Guiana, on the northeastern coast of South America, technical teams have begun making progress on the final checklist of preparations before liftoff later this year.
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