MARS
National Geographic, 9:00 p.m. ET
SEASON PREMIERE: Is there life on Mars? Well, in the cliffhanger to last season’s National Geographic series – an unusual combination of nonfiction interviews with experts and a scripted dramatization of what a manned mission to the red planet might entail – there was a discovery of life on Mars. The scripted, fictional part of this show, that is. And tonight, that story, and that mission, continues, as do the real-life questions and considerations discussed by the people interviewed. For a full review, see David Hinckley's All Along the Watchtower.