be able to deliver some 70 tons to low-earth orbit, or less than 20 tons to Mars, while costing
around $150 million per mission. According to Musk, the rocket cost somewhere north of $500 million to develop.
Then look at the Space Launch System (SLS) being built under NASA’s instruction by Boeing, also to explore the solar system. According to the new NASA budget released last week, it will fly for the first time in 2020, capable of carrying some 77 tons to low earth orbit
at a cost of about $1 billion a flight.
