![Article Image](https://www.freedomsphoenix.com/Uploads/Pix/004-0928001308.jpg)
Indomitable Mars rover arrives at big crater's rim
• ReutersThe Mars Rover Opportunity has arrived at the rim of a big crater that scientists never thought it could reach. Hope it can explore the depths of Victoria Crater to find out more about the history of the red planet -- especially whether water still e