The Space Barrons

The Space Barons: Elon Musk, Jeff Bezos, and the Quest to Colonize the Cosmos by Christian Davenport

Text from the back cover:

Nearly a half-century after Neil Armstrong walked on the moon, the founders of some of the biggest brands in the world -- Amazon, Microsoft, Virgin, Tesla, and PayPal -- are using Silicon Valley-style innovation to dramatically lower the cost of space travel and send humans even further than NASA has gone.  Billionaire entrepreneurs Elon Musk and Jeff Bezos, along with Richard Branson and Paul Allen, have upended industry after industry.  Now they are pursuing the biggest disruption of all:  the human exploration and colonization of space. 

Ms. Sharp's quick review:  Has exploring space become a business?