Astronomers believe that red dwarf stars may produce habitable conditions for alien organisms. See more in this clip from "Aliens and Strange Creatures." Watch all new episodes of Ancient Aliens, Friday, January 6th, at 9/8c, and next day on The HISTORY Channel website at ...

In this week's Questions and Answers show, I explain how astronauts are trained to deal with medical emergencies if the Universe is expanding smoothly or chaotically, and what would survive longer, a white dwarf or a red dwarf? 00:00 Start 01:34 What if there's a medical emergency on the ISS? ...