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The James Webb space telescope has turned its gaze away from the deep universe towards our home solar system, capturing an image of a luminous Neptune and its delicate, dusty rings in detail not seen in decades.
The last time astronomers had such a clear view of the farthest planet from the sun was when Nasa’s Voyager 2 became the first and only space probe to fly past the ice giant for just a few hours in 1989.
Now Webb’s unprecedented infrared imaging capability has provided a new glimpse into Neptune’s atmosphere, said Mark McCaughrean, a senior adviser for science and exploration at the European Space Agency.
The telescope “takes all that glare and background away” so that “we can start to tease out the atmospheric composition” of the planet, said McCaughrean, who has worked on the Webb project for more than 20 years.
Neptune appears as deep blue in previous images taken by the Hubble space telescope due to methane in its atmosphere.
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Neptune and its rings captured by the James Webb space telescope. Photograph: Space Telescope Science Institut/ESA/Webb/AFP/Getty Images
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