Photo: Virgin Galactic
The Cirrus Aviation fleet includes heavy jets like the Challenger 604 to take travelers to all corners of the globe. But what if the globe isn't enough? An emerging wave of space tourism is promising to launch passengers to the edge of Earth's orbit — and possibly beyond. These "private jets of the future" are shifting the space race from a military mission to private enterprise. As the nation celebrates the 50-year anniversary of Apollo 11's historic flight to the moon this summer, we can only imagine what the next 50 years have in store. Here are the businesses and entrepreneurs leading the way.