A 1/6 scale model of the AR1 engine currently in development by Aerojet Rocketdyne as a replacement for the Russian-built RD-180 engine that powers United Launch Alliance's Atlas 5 rocket. Credit: Aerojet Rocketdyne
A 1/6 scale model of the AR1 engine currently in development by Aerojet Rocketdyne as a replacement for the Russian-built RD-180 engine that powers United Launch Alliance's Atlas 5 rocket. Credit: Aerojet Rocketdyne
Aerojet Rocketdyne's Julie Van Kleeck doing a television interview following an April 12 media roundtable at the 32nd Space Symposium. Credit: SpaceNews/Brian Berger
ULA President and CEO Tory Bruno. Credit: ULA video
A 1/6 scale model of the AR1 engine currently in development by Aerojet Rocketdyne as a replacement for the Russian-built RD-180 engine that powers United Launch Alliance's Atlas 5 rocket. Credit: Aerojet Rocketdyne
A 1/6 scale model of the AR1 engine currently in development by Aerojet Rocketdyne as a replacement for the Russian-built RD-180 engine that powers United Launch Alliance's Atlas 5 rocket. Credit: Aerojet Rocketdyne
Sen. Dianne Feinstein
Antares Orb-3 explosion
Orion
Antares Orb-3 explosion
Antares Orb-3 explosion
Expanded diagram Vulcan six boosters
Chris Chadwick (left) is president and chief executive officer of Boeing Defense, Space &; Security  and a member of Boeing's executive council. Craig R. Cooning (right) is president of Boeing Network and Space Systems. Credit: Boeing
AR-1 twin configuration
Aerojet Rocketdyne announced Sept. 9 that it has hired Jim Simpson as its new senior vice president of strategy and business development, effective Sept. 21. Credit: Tom Kimmell
Artist's concept of NASA's Green Propellant Infusion Mission. Credit: NASA.

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