航天任务
詹姆斯·韦布空间望远镜
James Webb Space Telescope
The most powerful infrared observatory in space
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简介
A collaboration between NASA, ESA and CSA, JWST launched on 25 December 2021 on a European Ariane 5 rocket. From the L2 Lagrange point, 1.5 million km from Earth, it observes the first galaxies and the atmospheres of exoplanets.
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Its 6.5 m primary mirror is made of 18 gold-coated hexagonal segments.