The most ambitious astronomical mission ever undertaken is about to begin. The James Webb Space Telescope was built 30 years ago and is now almost ready to go.
The $ 10 billion (£ 7 billion) project, a collaboration between NASA, the European Space Agency and the Canadian Space Agency, hopes to go back in time to learn more about how the first stars were made and how to experience the beginnings. of our universe.
But how exactly will it work?
Rebecca Morelle, BBC science editor, explains.
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