Ah, The Jetsons, with their fabulous flying cars, Mars vacations and moon dome homes. What's stopping us from living the life of George, Jane, Judy and the little boy, Elroy?

Rockets, says one technology historian. Time to move on from the today's technology to something better.

"If space is the final frontier, why are we still using the same technology that took Yuri Gagarin into orbit a half-century ago," asks Jonathan Coopersmith of Texas A&M University in College Station. "The answer is economics: Rockets just cost too much and are inherently limited in how cheap they can get."

No argument there.  To read the rest of the article, click here.