PARIS — Not-so-startup launch service provider and rocket-engine builder Blue Origin now counts more than 1,000 employees, of which 30 percent have more than 20 years’ experience in the aerospace industry and another 30 percent have 10 or more years’ experience, Blue Origin Sales and Marketing Vice President Clay Mowry said.

The company, which has emerged from its self-imposed silence only in the past year, was founded in 2000, making it about two years older than competitor SpaceX. Since then has been developing rocket propulsion systems and full launch vehicles from its Kent, Washington . . .

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