Connect With J-2X
A-3 Test Stand
The A-3 construction site is a busy place as work continues on the test stand that will allow rocket engine testing at simulated high altitudes up to 100,000 feet.
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J-2 Engine
A look back at the original J-2 engine development, from the historical 1968 fact sheet.
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Overview: J-2X Engine
J-2X is a highly efficient and versatile advanced rocket engine with the ideal thrust and performance characteristics to power the upper stage of NASA's Space Launch System, a new heavy-lift launch vehicle capable of missions beyond low-Earth orbit. Fueled by liquid oxygen and liquid hydrogen, the J-2X builds on heritage designs but relies on nearly a half-century of NASA spaceflight experience and technological and manufacturing advances to deliver up to 294,000 pounds of thrust, powering exploration to new destinations in our solar system.
J-2X Engine on Flickr
Image Gallery
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View the latest images of J-2X engine development and testing.
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Video Gallery
Media Contacts
Kim Henry
Marshall Space Flight Center
Phone: 256-544-0034
Kimberly.M.Henry@nasa.gov@nasa.gov
Rebecca Strecker
Stennis Space Center
Phone: 228-688-3249
Rebecca.A.Strecker@nasa.gov