Mars is a no man’s land where survival seems like a distant dream. After all, no man has ever walked on its surface and plans to send an astronaut to the red planet are only in the beginning stages of its development. However, humans have been on Mars through the wheels of Mars rovers. We’ve had 4 victorious robotically operated Mars rovers, so far: Sojourner, Opportunity, Spirit, and Curiosity.
As Opportunity’s mission was declared complete on February 13, 2019, when NASA lost all contact with the vehicle, Curiosity became the lone survivor on the red planet, rolling over its surface to experiment and explore the unknown land all by itself. The spacecraft first arrived on Mars on August 6, 2012, and started taking out its objectives during the years. In fact, Curiosity did its work so well and held on for so long that its primary mission duration of 687 days was extended indefinitely.