Robert Lightfoot, NASA’s Acting Administrator, to Retire as Trump’s Nominee Is Stalled Mr. Lightfoot has filled in since the end of the Obama administration, and the agency has never gone this long without a leader confirmed by the Senate. Share: Facebook Twitter Google+ Stumble Digg Email ThisBlogThis!Share to XShare to Facebook Related Posts:Pink Moon 2017: In case you missed it here’s how to watch it againTrilobites: How Ants Figured Out Farming Millions of Years Before HumansWATCH LIVE as NASA to reveal ‘NEW DISCOVERIES’ on other OCEAN PLANETSTrilobites: Saber-Toothed Cats Paid a Stiff Price for LunchAbout New York: Another Reprieve for Expert Testimony That Is Anything ButMore Permafrost Than Thought May Be Lost as Planet Warms