![]() Looming over Neptune in a zoomed-out image is what appears to be a very bright spiky star, but is in fact Triton, Neptune's strange, huge moon haloed with Webb's famed diffraction spikes. Webb also spotted seven of Neptune's 14 known moons. Because the planet is tilted away from Earth and takes 164 years to orbit the Sun, astronomers have not yet had a good look at its north pole. The image also shows an "intriguing brightness" near the top of Neptune, NASA said in a statement. "The rings are more reflective in the infrared," McCaughrean said, "so they're much easier to see". However the near-infrared wavelengths captured by Webb's primary imager NIRCam shows the planet as a greyish white, with icy clouds streaking the surface. Neptune appears as deep blue in previous images taken by the Hubble Space Telescope due to methane in its atmosphere. The telescope "takes all that glare and background away" so that "we can start to tease out the atmospheric composition" of the planet, McCaughrean, who has worked on the Webb project for more than 20 years, told AFP. Now Webb's unprecedented infrared imaging capabilities have provided a new glimpse into Neptune's atmosphere, said Mark McCaughrean, a senior advisor for science and exploration at the European Space Agency. ![]() 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. 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, NASA said Wednesday. ![]()
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