Powerful space science telescope peers into the dawn of known universe
The first full-colour image from Nasa’s James Webb Space Telescope, a revolutionary apparatus designed to peer through the cosmos to the dawn of the universe, shows the galaxy cluster SMACS 0723, in a composite made from images at different wavelengths taken with a near-infrared camera.
The image showcased by Biden and Nasa chief Bill Nelson showed the 4.6-billion-year-old galaxy cluster named SMACS 0723, whose combined mass acts as a “gravitational lens”, distorting space to greatly magnify the light coming from more distant galaxies behind it. He was joined at the Old Executive Office Building of the White House complex by vice-president Kamala Harris, who chairs the US National Space Council.
Webb was constructed under contract by aerospace giant Northrop Grumman. It was launched to space for Nasa and its European and Canadian counterparts on Christmas Day 2021 from French Guiana, on the northeastern coast of South America. Built to view its subjects chiefly in the infrared spectrum, Webb is about 100 times more sensitive than its 30-year-old predecessor, the Hubble Space Telescope, which operates mainly at optical and ultraviolet wavelengths.
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