Congressman asks NASA scientist about ancient Martian civilizations, and things get awkward

Being an elected official means that you should probably have a working knowledge of whatever topic it is you're planning to publicly address at any given time. Many government talking heads fall far short of that requirement on a regular basis, and the latest example is Rep. Dana Rohrabacher of California. At a congressional meeting with some of NASA's top scientists to discuss the prospects of further exploration of planets and moons in our Solar System, Rohrabacher asked a question that would