Editor’s note: Word has it that Mike Griffin’s team has more or less settled on a 120 metric tonne payload, in-line, Shuttle-derived Heavy Launch System.

Biologist, Explorers Club Fellow, ex-NASA Space Biologist and Payload integrator, Editor of NASAWatch.com and Astrobiology.com, Lapsed climber, Explorer, Synaesthete, Former Challenger Center board member 🖖🏻