[dungdongdang]

one day, when mars has high energy requirements, it will still be easier to mine on earth and bring uranium to mars. there will never be a time when it is not. not sure what you are not getting here. unless you mean millions of years in the future, when humanity is dead, and mars is terraformed and as friendly an environment to build a mine as earth.

don't be so quick to make up stuff people never said.