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天王星:你应该知道这些事实 - Practical Tips

天王星:你应该知道这些事实

by Tobias

天王星是太阳系中最冷的行星。天王星上的一天会持续很久。这是因为它远离太阳

天王星:关于这颗行星的有趣事实

天王星是太阳系中最迷人的行星之一,因为它围绕太阳的轨道与地球的轨道截然不同。

  • 天王星在太阳系中的位置:天王星是太阳系中的第七颗行星,位于土星之外。它是一颗气态巨行星,属于外行星。
  • 发现:这颗行星是由德裔英国天文学家威廉-赫歇尔(William Herschel)于 1781 年发现的。 这是自古以来第一次在太阳系中发现新的行星。
  • 轨道和自转:天王星绕太阳运行的平均距离约为 29 亿公里,运行时间约为 84 年。这一有趣的轨道导致地球有时位于天王星北极上方,有时位于天王星南极上方。在天王星上,有 21 年是冬天,21 年是夏天

关于寒冷星球的更多趣事

天王星的大气层主要由氢、氦和甲烷组成。大气层中的甲烷吸收红光,反射蓝光,使天王星呈现蓝色。

  • 星环和卫星:天王星有一个由深色狭长星环组成的星环系统。这颗行星还有至少 27 颗已知的卫星,包括泰坦尼娅、奥伯龙、翁布瑞尔、艾瑞尔和米兰达。
  • 极度倾斜: 由于天王星的自转轴不寻常,天王星几乎是侧卧的,这导致了极端的季节。在一年中的部分时间里,一极是冬天,另一极是夏天。因此,在春季和秋季,昼夜长达 42 年。
  • 探索:唯一到过天王星的太空探测器是 1986 年的旅行者 2 号探测器。 这次任务提供了有关天王星及其卫星的重要信息。

Extremely large, cold and little explored

与其他行星不同,天王星的探索还很不够。这使它对我们人类来说很神秘。

  • 天王星距离太阳 29 亿公里。这使它成为太阳系中最冷的行星
  • 这颗行星绕太阳一周需要84年。这是由它的体积和与太阳的距离决定的。
  • 天王星的大小是地球的四倍。天王星的表面温度为零下 200 摄氏度,因此不可能有生命存在。

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