太阳
The Sun is the star at the center of the Solar System. It is almost perfectly spherical and consists of hot plasma interwoven with magnetic fields. It has a diameter of about 1,392,684 km, about 109 times that of Earth.
地球
地球是太阳系八大行星之一,按离太阳由近及远的次序排列为第三颗。地球是太阳系的第三颗行星,也是太阳系中直径、质量和密度最大的类地行星。住在地球上的人类又常称呼地球为世界。地球是上百万种生物的家园,包括人类。地球是目前人类所知宇宙中唯一存在生命的天体。
Earth is the third planet from the Sun, and the densest and fifth-largest of the eight planets in the Solar System. The planet is home to millions of species of life, including humans.Both the mineral resources of the planet and the products of the biosphere contribute resources that are used to support a global human population.
月球
The Moon is the only natural satellite of the Earth, and the fifth largest satellite in the Solar System. It is the largest natural satellite of a planet in the Solar System relative to the size of its primary,having 27% the diameter and 60% the density of Earth, resulting in 1⁄81 its mass.
good note to share about the sun, moon and earth.
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