RAMON ANDRADE 3DCIENCIA / SCIENCE PHOTO LIBRARY RAMON ANDRADE 3DCIENCIA / SCIENCE PHOTO LIBRARY
James Webb Space Telescope (JWST), illustration. This is an infrared telescope that is scheduled to be launched in 2019. It will be positioned near the Earth-Sun L2 Lagrangian point (Earth and Moon shown in background). It will have a 6.5-metre-diameter mirror (yellow), with which it will study the formation of stars and planetary systems, and the history of the universe. By using infrared wavelengths, the JWST will be able to see through much of the dust that obscures visible light. It will also study dark matter, which is thought to form the majority of the matter in the universe. The telescope dimensions are 24 by 12 by 12 metres. Structures include the primary mirror (yellow) and the sunshield (folded).
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