Mars
is the fourth planet from the Sun.
Mars is also a dynamic planet with seasons, polar ice caps, canyons,
extinct volcanoes, and evidence that it was even more active in
the past.
Mars is a dusty,
cold, desert world with a very thin atmosphere. There is strong
evidence Mars was—billions of years ago—wetter and warmer, with
a thicker atmosphere.
Mars is one
of the most explored bodies in our solar system, and it's the only
planet where we've sent rovers to roam the alien landscape. Two
NASA rovers and one lander are currently exploring the surface of
Mars (and a Chinese lander is set to land later this year). An international
fleet of eight orbiters are studying the Red Planet from above.
These robotic
explorers have found lots of evidence that Mars was much wetter
and warmer, with a thicker atmosphere, billions of years ago.
Mars is sometimes
called the Red Planet. It's red because of rusty iron in the ground.
10
Things to know
1 Small planet
2 Fourth Rock
3 Longer days
4 Rugged terrain
5 Bring a spacesuit
6 Two moons
7 Ringless
8 Many missions
9 Tough place for life
10 Rusty planet
Source
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