Space Race 2.0Space Race 2. 0 is the only authoritative photographic history of the efforts of private companies, often alongside NASA, to accelerate humankind's exploration and understanding of the final frontier. The private space sector is growing tremendously. The industry's consensus leader, SpaceX, headed by outspoken billionaire Elon Musk, is today worth an estimated $74 billion. SpaceX and its chief competitors, Blue Origin and Virgin Galactic, are taking