Translations:AY Honors/Stars/Planet characteristics/1/en
From Pathfinder Wiki
Uranus and Neptune cannot be seen with the naked eye. Mercury and Venus are only seen near the hours of sunrise and sunset because they are closer to the Sun than the Earth.
Mercury
Mercury is the planet closest to the Sun. It orbits the Sun once every 88 Earth-days. Mercury has very little atmosphere because its gravity is so weak due to its small size. Like the Moon, Mercury's lack of an atmosphere means that it is struck often by other bodies, leaving its surface cratered. If it had a thicker atmosphere, these objects would burn up before they reached the surface. Another similarity between Mercury and the Moon is that Mercury's day is equal to its year at 88 days.
