Forbes has published its annual list of the planet’s billionaires. A small but growing number of them are either directly supporting major space projects or doing so through the companies that they run. FORBES RANK NAME AGE 2015 NET WORTH (BILLIONS) SOURCE(S) OF WEALTH SPACE INVESTMENT(S)  15 Jeff Bezos 51  $34.8 Amazon.com Blue Origin 16 Mark Zuckerberg 30  $33.4 Facebook Global satellite network 19 Larry Page 41 $29.7  Google SpaceX, […]