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柠檬形状系外行星大气中富含碳分子
Ke Ji Ri Bao· 2025-12-23 01:13
Core Findings - A unique exoplanet named PSR J2322-2650b has been discovered by scientists at the University of Chicago using the James Webb Space Telescope, characterized by its lemon-like shape and high carbon content in its atmosphere [1][2] - This exoplanet is located approximately 4000 light-years from Earth and orbits a rapidly rotating pulsar, which is a rare occurrence in the known universe [1] - The atmosphere of PSR J2322-2650b contains significant amounts of carbon molecules (C3, C2) and exhibits extreme conditions that challenge existing theories of planetary formation [1] Atmospheric and Physical Characteristics - The planet's proximity to its host star and the massive size of the pulsar have resulted in its lemon-shaped, oblate form, with a "year" lasting about 7.8 hours and surface temperatures reaching up to 650°C [2] - Unlike most gas giants, the atmospheric wind direction on PSR J2322-2650b is opposite to the planet's rotation [2] - The planet appears deep red with clouds of graphite floating in its atmosphere, earning it the description of "an evil lemon" and marking it as one of the most peculiar exoplanets known to date [2]