When Neil deGrasse Tyson isn't busy reading hate mail from third graders for saying Pluto isn't a planet, he'll be hosting Cosmos: A Space-Time Odyssey, the sequel to Carl Sagan's Cosmos: A Personal Voyage.

Last time we wrote about the possibly-habitable exoplanets orbiting red dwarf star Gliese 581 was back when we were nerding out over the possibility of life on Gliese 581g, a planet which, it turns out, may not actually exist.