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kkumrimaedo:

One of the factors that made it so difficult for the scientists on Earth when they were working with the rovers was: -The rovers were very heavy to transport to Mars. -The rockets ran out of fuel before they got to Mars. -The math they did before sending the rovers was all wrong. -They had to live on Mars time while working with the rovers.

kkumrimaedo:

i need help people!

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