- Reusing rockets cuts the cost of space launches tremendously, Don Lincoln says
- That may help the SpaceX founder achieve his goal of colonizing Mars, he says
Dr. Don Lincoln is a senior physicist at Fermilab and does research using the Large Hadron Collider. He has written numerous books including "The Large Hadron Collider: The Extraordinary Story of the Higgs Boson and Other Things That Will Blow Your Mind," and produces a series of science education videos. In collaboration with the Great Courses company, he recently released a video course about the Theory of Everything. Follow him on Facebook. The opinions expressed in this commentary are his.
(CNN)Space exploration is a rich person's game. Every time you see a rocket launched from the Kennedy Space Center, thunderously clawing its way above the Earth's atmosphere, this represents an expenditure of tens of millions or even hundreds of millions of dollars. The cash equivalent of each space shuttle launch was a cube of US dollar bills about 25 feet (8 meters) on a side.