Many roads to the Red Planet

摘要

The next Mars landing will be worth making time to watch. It may be the last of its kind. Scheduled to touch down on the Red Planet on 5 August via a nail-bitingly intricate, autonomous procedure, NASA's Curiosity rover will undertake an unprecedented two-year hunt for signs of alien life. Costing $2.5 billion, Curiosity- known formally as the Mars Science Laboratory (MSL) - is the biggest, boldest, most expensive Mars mission ever attempted.