Invoice for Mars Mission: $1 Trillion?

Sending humans into space has become mundane.  In addition to various government space programs, there are now private corporations either sending people to space or planning commercial space flights.  The holy grail of all this development is to send a human mission to Mars.

In 1969 the first humans stepped onto the surface of the moon in a program that cost between $20-23 billion.  Adjusted for inflation and current market prices, NASA estimated that the six moon landings of the Apollo program would cost $170 billion today.  That seems likes peanuts compared to the estimated cost associated with sending one mission to Mars by 2040. … Read the rest