Re-visit our Let’s Make America Smart Again series as Neil deGrasse Tyson, comic co-host Chuck Nice, and Ellen Stofan look at the past, present, and future of NASA. Now extended with Neil and Chuck chatting with former HI-SEAS IV crew member Dr. Sheyna Gifford on interstellar space travel.

NOTE: StarTalk All-Access subscribers can watch or listen to this entire episode commercial-free here:

Image Credit: NASA.