Solar System - You can compare the sizes of the planets relative to each other and relative to the sun. - You will see how strikingly different the orbits of the planets are, their speed of rotation around the sun and around their own axis...
正确，不选；C的smaller masses做关键词定位至第三段第一句的size，正确，不选；D与原文第一段末句...
Size Comparison of all Bodies in Solar System 18272020-05 6 Planets In Our Solar System, Exploring Planets Learning Videos For Kids 18802020-05 7 Planet Song 93592020-05 8 Outer Space For Children, Solar System for Kids 25012020-05 9 Mars Song_Planet Mars Song for Kids_Mars Song for Kids ...
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•••• Size Comparison •••• This page allows children to compare the sizes of many Solar System objects. Comparable objects include the Sun, the planets, major moons, and all the dwarf planets. •••• Planetary Revolutions •••• ...
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•••• Size Comparison •••• This page allows children to compare the sizes of many Solar System objects. Comparable objects include the Sun, the planets, major moons, and all the dwarf planets. •••• Planetary Revolutions •••• The planets are shown orbiti...
Related to Solar systems:Planets solar system n. 1.oftenSolar SystemThe sun together with the eight planets and all other celestial bodies that orbit the sun. 2.A system of planets or other bodies orbiting a star. American Heritage® Dictionary of the English Language, Fifth Edition. Copyrigh...
Comparison between the apparent size of the planets, measured in seconds of a degree, as they appear today. Credits for the planet images: NASA-APL - NASA. Brightest Comets List of the 10 brightest comets (open thefull list of 230 comets). ...
If the dissipative factors are small in comparison with the conservative influences (of the same type as the attraction of the planets) then the system may conceivably remain in "distant" resonance.doi:10.1016/0019-1035(68)90074-2A.M. Molchanov...