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Astronomers Discover Hidden Moon Orbiting Uranus

2 weeks ago
alternative_right shares a report from ScienceDaily: Southwest Research Institute led a James Webb Space Telescope (JWST) survey, discovering a previously unknown tiny moon orbiting Uranus. A team led by SwRI's Dr. Maryame El Moutamid discovered the small object in a series of images taken on Feb. 2, 2025, bringing Uranus' total moon count to 29. "As part of JWST's guest observer program, we found a previously unknown satellite of the ice giant, which has been provisionally designated S/2025 U 1," said El Moutamid, a lead scientist in SwRI's Solar System Science and Exploration Division in Boulder, Colorado. "This object, by far the smallest object discovered to date, was detected in a series of 10 long exposures obtained by the Near-Infrared Camera." Located in the outer solar system, Uranus is the seventh planet from the Sun. Known as "the sideways planet" for its extreme axial tilt, the cyan-colored ice giant has a deep atmosphere composed of hydrogen, helium and methane. Scientists think Uranus' larger moons are roughly equal parts water ice and silicate rock. "Assuming that the new moon has an albedo comparable to other nearby satellites, this object is probably around six miles (10 km) in diameter," El Moutamid said. "It is well below the detection threshold for the Voyager 2 cameras."

Read more of this story at Slashdot.

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2 weeks ago

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