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The R-7 family of rockets originated from an ICBM developed to carry nuclear weapons.
Also on Friday, the company obtained a launch license for New Glenn launch attempts.
"Elon get those rocket ships going because we want to reach Mars before the end of my term."
"Quite simply, we want to find the birthplace of the solar wind."
"Maybe, maybe, maybe today, maybe soon. I think it's very soon."
"Space is an area of activity where there is never a 100 percent guaranteed result."
No federal agencies have accused Musk of disclosing classified information.
China launched the first 10 spacecraft in a planned constellation of 13,000 Internet satellites.