NASA, ESA, CSA, STScI; J. DePasquale, A. Koekemoer, A. Pagan (STScI) (CC BY 4.0)
A tiny, dusty moon, only about 12 km across, whose origin is still a mystery.
Deimos is only about 12 km across, with a smooth surface covered in fine dust. It orbits Mars in about 30 hours.
Like Phobos, it may be a captured asteroid or may have formed from debris after an impact on Mars; its origin is still debated.
数据来源
工具和课程仅使用简化模型进行学习,不得用于导航、飞行任务规划或任何操作决策。 证书是免费的且无认证。 阅读教育内容免责声明