A moon only 10 kilometres wide was hiding around Uranus for decades. Voyager 2 missed it. Hubble missed it. But in 2025, Webb finally caught the faint speck circling near the planet’s inner rings, raising Uranus’s known moon count to 29. - Space Daily
Webb's NIRCam detected S/2025 U1 in February 2025, a roughly 10-kilometre inner moon of Uranus too faint for Voyager 2 or Hubble.
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