Mars

Discussion of Pluto, teaching science, and the state of NASA.

A conversation with Dr. Richard Berendzen of American University and astrophysicist Neil deGrasse Tyson of the Hayden Planetarium about NASA's trip to Mars and the significance of analyzing the planet's rock samples.

A conversation with Ed Weiler, director of NASA's origin program, Michael Lemonick, author of "Other Worlds" and Neil Tyson, the director of the Hayden Planetarium, about the possibility of life on other planets and NASA's program that explores the question.

Discussion of the delayed Hubble Space Telescope mission to the recent discovery of snow on Mars.