Originally dubbed the Next Generation Space Telescope, what is now known today as the James Webb Space Telescope is the successor to the Hubble Space Telescope. Scheduled to launch sometime in 2013, the Next Generation Space Telescope is being designed to be bigger and better than the Hubble with many more capabilities.
The James Webb Space Telescope (JWST) is a large, infrared-optimized space telescope. JWST will find the first galaxies that formed in the early Universe, connecting the Big Bang to our own Milky Way Galaxy. It will peer through dusty clouds to see stars forming planetary systems, connecting the Milky Way to our own Solar System. The next generation in space telescopes will have instruments that are designed to work primarily in the infrared range of the electromagnetic spectrum, with some capability in the visible range.
JWST will have a large mirror, 6.5 meters (21.3 feet) in diameter and a sunshield the size of a tennis court. Both the mirror and sunshade won’t fit onto the rocket fully open, so both will fold up and open only once it is in outer space. JWST will reside in an orbit about 1.5 million km (1 million miles) from the Earth.
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