SpaceX CEO Elon Musk estimates the cost of having a self-sustaining civilization on Mars to be between 100 billion and 10 trillion US Dollars.SpaceX CEO Elon Musk estimates the cost of having a self-sustaining civilization on Mars to be between 100 billion and 10 trillion US Dollars.
Hello, my name is Jack Sparrow. I'm a 50 year old self-employed Pirate from the Caribbean.
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