MOFFET FIELD, Calif. – NASA officials signed a memorandum of understanding Tuesday with a U.S. company, Virgin Galactic, LLC, to explore the potential for collaborations on the development of space suits, heat shields for spaceships, hybrid rocket motors and hypersonic vehicles capable of traveling five or more times the speed of sound.

The memorandum is only a framework to explore potential collaborations. It does not include training of NASA astronauts, an agreement to buy seats on a Virgin Galactic flight, or provision of technical advice by NASA to Virgin Galactic.