The commission, which is chaired by a White House staffer, voted 9 to 1 to approve the design, which includes a ballroom with seating for 1,000 guests.
The engine firing is timed to provide a slingshot-like boost to the Orion capsule, speeding it up to some 25,000 mph, the velocity needed to break free of Earth's gravitational clasp for a four-day trek to the moon.
