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(Coincidentally) I saw a PBS documentary on Mars last night! The estimation with the moon travel technology is around 2.5-3 years for trip. However, the technology (and the political issues of funding) will need to be fixed before they attempt a mission. (So, that number will likely be lowered soon)
It takes Mars about 1.88 Earth years or 687 Earth days to orbit the Sun once. This is equivalent to about 98 Earth weeks.
Mars is a little over half the size of Earth.
if someone leaves Earth and then goes to Mars they would not have a loss or gain of eyes
Actually, Mars is smaller than Earth. Mars is only three-fourths the size of Earth, so 75% of Earth would fit in Mars.
None, because only half an Earth can fit inside of Mars.
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90 days
earth is 1 planet away from mars
Mars is 0.107 times the mass of earth. The reciprocal of that is the number of planets the mass of Mars it would take to equal a planet the mass of earth, or a little over 9 and 1/3.
Refill what? Since there is nothing between Earth and Mars, it would be hard to refill with anything.
A man on Mars would weigh 38% of his weight on the Earth. This means that to find out a man's weight on Mars, you have to multiply their weight by 0.38. example: 100 pound man on the Earth weighs 100 X 0.38 = 38 pounds on Mars
On Mars you would weigh pi pounds.