An artist's rendering shows Opportunity on the surface of Mars. It landed on the red planet 10 years ago and is still exploring. Photo: AP
Nasa's Opportunity chalks up10 years roving Mars surface
Journey that was supposed to last three months has resulted in amazing discoveries, including evidence of water and a doughnut-shaped rock
An artist's rendering shows Opportunity on the surface of Mars. It landed on the red planet 10 years ago and is still exploring. Photo: AP
