研究行星、天然卫星、小行星等太阳系天体的性质和演变的学科。
行星学会 The Planetary Society ; Planetary Society
比较行星学 [天] comparative planetology
行星科学 [天] planetary science ; Planetary Sciences ; Planetologie
小行星学说 planetesimal theory
地球和行星学 Earth and Planetary Science
行星地质学 [地质] Planetary geology
行星学入门 Introduction to Planetary Science
地球与行星科学 Earth and Planetary Sciences
地球与行星科学通讯 Earth and Planetary Science Letters ; EPSL
当他教他们天文学的时候，他不仅仅教了行星的名字，还用利用这些名字来教神话学。
When he was teaching them astronomy, he didn't just teach them the names of the planets—he used it as a way to teach mythology.
这颗行星，VB 10b，是用天体测量学的方法，精确测量它的恒星在空中的受迫摆动而发现的。
The planet, called VB 10b, was discovered using astrometry, a method inwhich the wobble induced by a planet on its star is measured preciselyon the sky.
用月亮来观察地球重新建立了外星行星凌日的基本几何学原理，同时平衡了穿过整个大气层的影响。
Using the Moon to view Earth recreates the basic geometry of exoplanet searches, as well as averaging the effect across the entire atmosphere.
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