The launch of the Webb telescope maintained in 2021

DECRYPTION – Hubble’s successor cost nearly $ 10 billion. It is due to be placed in orbit this fall by the European Ariane 5 rocket.

It’s the most anticipated launch of the year, if not the decade. The James Webb Space Telescope (James Webb Space Telescope, or JWST) should finally take off in 2021 … with more than ten years behind the initial schedule and at a cost multiplied by twenty: nearly 10 billion dollars, now estimates NASA . The European Space Agency (ESA) estimates its contribution at 700 million euros.

This observatory, which will be located 1.5 million kilometers from Earth, is often presented as the successor to Hubble (in service for over thirty years!). A hundred times more sensitive, it will produce images three times better defined and should make it possible in particular to analyze the composition of the atmosphere of rocky planets and to flush out the light emitted 13.6 billion years ago by the first galaxies! Like its predecessor, it should produce sumptuous images of the most awe-inspiring cosmic objects around us.

While it seems fairly certain that the launch

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