Is there life on Mars? NASA's latest mission to the red planet might well answer that question, or perhaps the more pertinent question, was there life on Mars. At 10:02 AM EST on November 26th last year, the space agency's Mars Science Laboratory (to give the mission its full name) set off on its eight-month journey to the red planet. The most advanced equipment ever sent to the planet -- and the biggest-ever rover -- should allow exploration of some of the most interesting regions, over far larger distances than ever previously covered. On arrival, after negotiating a tricky landing, the mobile laboratory (that's Curiosity
