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总结
天文学家通过地基望远镜与欧洲“盖亚”空间望远镜的联合观测,首次在没有母恒星的情况下精确测量一颗“流浪行星”的质量与距离。该天体被认为大小接近土星,可能是在形成后被引力作用从行星系统中抛出。研究利用引力微透镜事件及视差数据将其从背景恒星中“看见”,为统计自由漂浮行星的数量、理解行星形成与动力学演化提供关键约束,并提升未来巡天对暗弱天体的测量能力。
正文
Astronomers Measure The Mass of a Planet With No Star For The First Time ScienceAlert Scientists Just Clocked a 'Rogue' Planet the Size of Saturn Scientific American Free-Floating Planet's Distance, Mass First Measured 조선일보 'Invisible' rogue planet with NO sun is detected hurtling through space after being kicked out by host stars The US Sun Distant rogue planet pinpointed by joint ground-space observations 동아사이언스
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