How much does it cost to build a city on Mars?

Building a city on a planet hundreds of millions of kilometers away would be expensive.

The CEO of SpaceX Elon Musk estimates that the cost ranges from $ 100 billion to $ 100 trillion, according to a recent tweet posted on Twitter.

The Observatory pointed out that Mask, in order to reach his estimate, made calculations of the estimated future cost of sending the minimum load to Mars; that amounted to $ 100,000 per ton. He said in an interview in July with CBS; if we need a million tons of the number for a self-sufficient city, the total cost will reach about $ 100 billion.

In order for SpaceX to start building the first city on another planet, it will have to launch its StarShip missile first. Tons of cargo to Mars if the company has a way to refuel the rocket in Earth's orbit.