Solar System.
How Phoenix Gets a Look at its Footing
Jet Propulsion Laboratory https://www.jpl.nasa.gov/ May 26, 2008
This artist's animation shows how NASA's three-legged Phoenix Mars Lander is able to get a better look at its footing and the physical characteristics of the underlying soil on the surface of the Red.
Transcript
This artist's animation shows how NASA's three-legged Phoenix Mars Lander is able to get a better look at its footing and the physical characteristics of the underlying soil on the surface of the Red Planet.