But the spacecraft went missing in December of 1999 after entering Mars atmosphere, and its disappearance has been a mystery. Attempts at finding the presumably crashed lander using images from the Mars Global Surveyor have been unsuccessful. But now we have the Mars Reconnaissance Orbiter and its powerful HiRISE Camera.
A new campaign has begun to try and find the Mars Polar Lander, and the best thing about it is that you can help!