Sierra Nevada Corporation Internal Memo: Mark Sirangelo: My Transition At SNC
“I wanted to let you know of decision that I have made. After reflecting on my commercial space journey over the past 17 years and after significant consideration I have concluded that it is time for me to make a change and end my executive role leading Sierra Nevada Corporation’s Space Systems. This decision is being made from a positive personal place and as a friendly transition from SNC with the knowledge that the SNC space business is stable and strong.”

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...