Asteroids & Comets, In Space Infrastructure, Space Science Video: John S. Lewis talk on asteroids and mining them September 11, 2013 TopSpacer Here is a video of the talk by asteroid guru John Lewis (see earlier post) given in Silicon Valley last night: Share this: Share on Facebook (Opens in new window) Facebook Share on X (Opens in new window) X Share on LinkedIn (Opens in new window) LinkedIn Share on Tumblr (Opens in new window) Tumblr More Share on Pinterest (Opens in new window) Pinterest Print (Opens in new window) Print Share on Reddit (Opens in new window) Reddit Related