NASA's Next Generation of Space Vehicles

Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. Having retired its Space Shuttle program in 2011, after 30 years of service and 135 missions, for now NASA uses Russian Soyuz rockets to fly their astronauts to the International Space Station until their next manned space craft enters service in 2016. Learn more about the agency's next launch vehicle, the Space Launch System, as well as the Orion Multi-Purpose Crew Vehicle it will carry in this book.