Description
开普勒是探测系外行星的一个空间望远镜，在它所观测的天区内，科学家发现了四千多颗行星。同时，开普勒发现了一颗距离我们最近的比邻星，周围存在着比邻星b，不仅大小与地球类似，还可能处于宜居带内，存在着液态水。为了观测非常小的行星目标，天文学家通过视向速度推测行星的质量，根据不对称性推测行星的轨道倾角。太阳系外是什么情况？系外行星是怎么形成的？又应该如何观测行星系统？“格致论道”是中国科学院全力推出、中国科普博览承办的科学讲坛，致力于精英思想的跨界传播。登录官方网站（self.org.cn）、微信公众号“SELFtalks”获取更多信息。
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