Our understanding of this mysterious planet is changing as a result of the many new insights we are learning about the geology of Mars. A major motivation for many of our missions to the a23 rummyRed Planet has been the search for life on the planet. The public's and scientists' fascination with the prospect of discovering proof of past or current life on Mars has sparked an unrelenting search for solutions. Recent findings have offered intriguing clues that Mars may have once been habitable, even though there is currently no concrete proof of life on the planet.