Planets

MERCURY
A year on Mercury takes 87.97 Earth days; it takes 87.97 Earth days for Mercury to orbit the sun once. Each sidereal day on Mercury takes 58.65 Earth days; it takes Mercury 58.65 days to rotate around its axis once.
Mercury has no moons.
Mercury is about 4,878 km in diameter.
Did you know one day on Mercury is actually two Mercurian years?

VENUS
Each day on Venus takes 243 Earth days. A year on Venus takes 224.7 Earth days. It takes 224.7 Earth days for Venus to orbit the sun once.Venus has no moons.
Venus is about 12,104 km in diameter.
Did you know Venus rotates VERY slowly. The same side of Venus always faces Earth when the Earth and Venus are closest together?


MARS
Each day on Mars takes 1.03 Earth days (24.6 hours). A year on Mars takes 687 Earth days; it takes this long for Mars to orbit the sun once.
Mars’ moons are Phobos & Deimos
Mars is 6790 km in diame...