Mars Mesmerizes at December 8th Opposition - Sky & Telescope - Sky & Telescope skyandtelescope.org - get the latest breaking news, showbiz & celebrity photos, sport news & rumours, viral videos and top stories from skyandtelescope.org Daily Mail and Mail on Sunday newspapers.
Bob McDonald's blog: It has long been suspected that liquid water once flowed on Mars. Now the latest research shows that billions of years ago, Mars had a deep ocean covering hundreds of thousands of square kilometres.