tetrahedrassface writes: Stennis Space Center spent a long summer testing the J2-X engine. The story hasn't received much press, but Stennis, and the J2-X had a very good summer indeed. Of note for this critical piece of equipment that will help up once again undertake manned exploration class space mission was that it smashed its endurance record not once, but twice. The first was the successful throttling up and down of the engine for 1,150 seconds. The second came on July 24'th with a test that lasted 1,350 seconds. That's great news for NASA as they try to move forward past the Shuttle Era and back into an age of beyond Low Earth Orbit manned missions.