This rendering of the James Webb Space Telescope is current to 2015 Image: Northrop Grumman/NASA via PA Images This rendering of the James Webb Space Telescope is current to 2015 Image: Northrop Grumman/NASA via PA Images THE WORLD’S MOST powerful space telescope has reached its final destination a million miles from Earth – a month after it lifted off on a quest to discover the dawn of the universe.
The mirrors on the observatory must still be meticulously aligned and the infrared detectors sufficiently chilled before scientific observations can begin in June, but flight controllers in Baltimore are already euphoric. A sunshield as big as a tennis court stretched open on the telescope in early January, 10 days after the Christmas Day launch from French Guiana. The observatory’s gold-coated mirror — 21 feet across — unfolded a few days later.
The seven-ton spacecraft always faces Earth’s night side to keep its infrared detectors as frigid as possible.
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