Apparently, a large number of individuals are certain that NASA's Mars missions are a huge hoax, and that the space agency's rovers are in fact sending back photographs in a island in Canada.
Obviously NASA states that this is complete nonsense.
Naturally, there is lots of signs that NASA really sent rovers to Mars, like a great deal of stunning photographs such as this one.
There are now two active vehicles around the world's surface, the exploration rover Opportunity and the bigger science laboratory rover Curiosity.