As the probe was nearing Mars, the Second Doctor, Jamie McCrimmon and Zoe Heriot landed on Mars. When the Doctor realised that the probe was due to land right where the TARDIS stood, they attempted to leave. However, the probe landed on top of the TARDIS, then fell to the ground, damaged beyond repair. (PROSE: Please Shut the Gate)
Behind the scenes Edit
In the real world, contact was lost with the Mars Polar Lander after it landed on Mars.