天王星 Uranus 海王星 Neptune 冥王星 Pluto 地球 Earth Men are From Mars, Women are from Venus.
star/ fixed star 恒星 meteor/ shooting star/ falling star 流星
5. astronomy
4. orbit
n. 轨道 move in an orbit v. 绕（天体等）的轨道运行 The moon orbits the earth. v. （使）进入轨道 orbit a satellite
revolve (围绕)旋转 spin （自身）旋转
九大行星 planet
金星 Venus 木星 Jupiter 水星 Mercury 火星 Mars 土星 Saturn
periscope A long vertical tube containing a set of mirrors which gives you a view of what is above you when you look through the bottom of the tube 潜望镜
o 天文学 astro- : relating to space, the planets, stars or other objects in space, or to a structure in the shape of a star 星的，天体的，宇宙的，外层空间的， 星形的
astronautຫໍສະໝຸດ 宇航员，航天员 astronautics 航天学，宇宙航 行学 astronomer 天文学家 astronomical: large astrophysics 天体物理学
宇宙类词汇
1. universe
宇宙 a. universal existing everywhere or involving everyone 普遍的，全体的，共同的
2. cosmos
the universe considered as a system with an order and pattern (视作有序体系的）宇宙
telescope 望远镜 Through a telescope, the planet appears as a small green disc.
hydroscope/ periscope
hydroscope 水气机，水中望远镜 The scientist explored the bottom of the ocean with aid of a hydroscope. hydroConnected with or using the power of water hydroelectric
3. telescope
tele-: over a long distance E. g. telephone television scope: range 范围 - scope: used to form nouns that refer to devices for looking at or discovering and measuring thing