Mars Rover
/ˌmɑːz ˈrəʊvə(r)/
/ˌmɑːrz ˈrəʊvər/
- a small vehicle made by NASA and sent to explore the surface of the planet Mars. The first Mars Rover, Sojourner, was sent in 1996 and landed successfully in 1997. The second and third Mars Rovers, Spirit and Opportunity, were sent in 2003 and landed in 2004, sending back pictures of the planet. The fourth Mars Rover, Curiosity, was sent in 2011 and landed in 2012.