Wonder why Mars is red or how it formed? What about its gravity, radiation, iron core and layers, or magnetic fields? How does time or the way things sound differ there? Ask all about Mars here.
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Could you stretch a large tube from earth to mars with oxygen flowing through it attached to the poles
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Were Mar's moon once part of Mars (as ours is thought to have been once part of Earth) or external rocks captured by the planet's gravity field?
do you think that the liquid erosion on mars meant that it had an atmosphere to heat it. therefor it must have had a magnetic feild to hold its atmosphere in place. so how did the magnetic feild just "vanish"?