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Mars 101 | National Geographic
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[Music]
to the ancient romans the planet mars
was symbolic of blood
and war
but to many people today
the red planet may hold the key
for a bright new future for humanity
[Music]
the story of mars began about 4.5
billion years ago when gas and dust
swirl together to form the fourth planet
from the sun
mars is the second smallest planet in
the solar system with a diameter just
shy of the width of africa
in fact its entire surface area is
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