James Webb Space Telescope launch soon; NASA to send it on million-mile trip

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JAMES WEBB SPACE TELESCOPE


 Launch    Date

Webb's launch date is set for December 25, 2021 07:20am EST ( 2021-12-25 12:20 GMT/UTC).

  Launch Vehicle

The James Webb Space Telescope will be launched on an Ariane 5 rocket. The launch vehicle is part of the European contribution to the mission. The Ariane 5 is one of the world's most reliable launch vehicles capable of delivering Webb to its destination in space. The European Space Agency (ESA) has agreed to provide an Ariane 5 launcher and associated launch services to NASA for Webb. The Ariane 5's record for successful consecutive launches is 80 (as of June 28, 2017).

Launch Location


image of the earth showing French Guiana

Webb will be launched from Arianespace's ELA-3 launch complex at European Spaceport located near Kourou, French Guiana. It is beneficial for launch sites to be located near the equator - the spin of the Earth can help give an additional push. The surface of the Earth at the equator is moving at 1670 km/hr.

Additional Details

The Launch Segment has 3 primary components:

1. Launch Vehicle: an Ariane 5 with the cryogenic upper stage. It will be provided in the single launch configuration, with a long payload fairing providing a maximum 4.57 meter static diameter and useable length of 16.19 meters.

2. Payload Adapter, comprising the Cone 3936 plus ACU 2624 lower cylinder and clamp-band, which provides the separating mechanical and electrical interface between the Webb Observatory and the Launch Vehicle.

3. Launch campaign preparation and launch campaign. The launch campaign preparation and launch campaign is the mutual responsibility of NASA, ESA, NGAS, and Arianespace.

Webb Launch Configuration

For the telescope to fit into the rocket, it must fold up. These images show how it fits into the rocket fairing. Images courtesy of ArianeSpace.com.

The world's most powerful space telescope is set to blast off on Saturday to its outpost 1.5 million kilometres (930,000 miles) from Earth, after several delays caused by technical hitches. The James Webb Space Telescope, some three decades and billions of dollars in the making, will leave Earth enclosed in its Ariane 5 rocket from Kourou Space Centre in French Guiana. The James Webb Space Telescope launch is scheduled in a brief window after 9:20 am (1220 GMT) on Christmas day and it will send the telescope on a month-long journey to its remote orbit around the Sun.


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