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第29颗!“尺寸太小,之前一直没发现”
Guan Cha Zhe Wang· 2025-08-20 08:52
Core Points - NASA's James Webb Space Telescope has discovered a new moon orbiting Uranus, marking the 29th known moon of the planet [1][3] - The new moon, designated S/2025 U1, was found in images taken on February 2, 2023, and is estimated to have a diameter of only 10 kilometers [1][3] - The discovery highlights the complexity of Uranus's moon system and its relationship with the planet's ring system, suggesting a chaotic history [3] Summary by Sections Discovery Details - The new moon was discovered using the near-infrared camera of the James Webb Space Telescope, which captured 10 sets of 40-minute long exposure images [1] - The moon orbits approximately 56,000 kilometers from the center of Uranus, situated between the orbits of moons Miranda and Ariel [1][3] - The moon's nearly circular orbit indicates it may have formed in its current location [1] Scientific Implications - The discovery of this small and faint moon suggests that there may be more complex structures yet to be discovered within Uranus's moon system [3] - Other planets do not possess as many small inner moons as Uranus, indicating a unique and intricate history of its satellite system [3] Observational Technology - The James Webb Space Telescope provides new perspectives for observing the outer solar system, with its high resolution and infrared sensitivity allowing for the detection of previously unseen faint and distant celestial bodies [3]