Mars nickname is the "Red Planet".
Mars is very cold and dry.
There are many volcanoes on Mars.
One of the volcanoes is called Mount Olympus.
Mars's diameter is 4,200 miles.
Mars's distance from the sun is 143 million miles.
Mars's period of revolution is 687 days.
Mars has two moons {Phobos and Deimos}.
Mars's period of rotation is 24 hours and 37 minutes.
The Viking landed on Mars.
Phobos means fear and Deimos means panic.
Mars's atmosphere is carbon dioxide.M. mass
Mars's mass is 1/10 th of the Earth's.
Mars's gravity on the surface is 2/5ths of the Earth's.
Mars is 34 million miles from Earth.
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