Back to Glossary

Yogi Rock

A large, rounded boulder near the Mars Pathfinder landing site, analyzed by the Sojourner rover. Its unusual shape and size made it a key target for surface interaction and imaging.

Source: mars.nasa.gov

APODs including "Yogi Rock"

Yogi Rock

11/07/1997

Yogi Rock
Image Credit: NASA Astronomy Picture of the Day

This portrait of Yogi Rock, a now famous boulder on Mars, was recorded on Sol 3 by the Imager for Mars Pathfinder (IMP). Big and friendly looking like its Earth cartoon namesake Yogi Bear, Yogi Rock is a prominent visible feature at the Pathfinder landing site. Yogi and surrounding soil are being examined close up by the Sojourner robot rover. Initial attempts to approach the rock and to place Sojourner's Alpha Proton X-ray Spectrometer against it have met with some minor, but not unusual, difficulties. It is speculated that the light colored "moat-like" terrain around Yogi is the result of the evaporation of surface water deposited by ancient floods.