Two Moons
Mars has two moons named Phobos and Deimos.
Longer days
Mars makes a complete orbit around the Sun (a year in Martian time) in 687 Earth days.
Ringless
There are no rings around Mars.
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At this time, Mars' surface cannot support life as we know it. Current missions are determining Mars' past and future potential for life.
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Mars is known as the Red Planet because iron minerals in the Martian soil oxidize, or rust, causing the soil and atmosphere to look red.
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Several missions have visited this planet, from flybys and orbiters to rovers on the surface.The first true Mars mission success was the Mariner 4 flyby in 1965.