It simulates that astronauts fly a spaceship from earth orbit to the moon first. For example: Sun, Mercury, Venus, Earth, Moon, Mars, Jupiter, Saturn, Uranus, Neptune and Pluto etc. This game is based on the background of various celestial bodies in the real solar system. According to the current astronomical observation and exploration, the solar system is composed of the sun, 9 planets and their satellites. After reach to the Moon select the planets or satellites they want to explore, and t.
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