Engaging romp through the world of billionaire space moguls. Good overview of these new space entrepreneurs and the business of space in general. Hard not to be somewhat awestruck by these huge, larger than life maverick personalities as they dream, brag, argue, pontificate, and shoot rockets into the upper stratosphere. Liked Vance's Musk biogreaphy more, but this was still hugely informative. Fun book - 4 stars