Liais (crater)

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Liais Crater is an impact crater in the Mare Australe quadrangle of Mars, located at 75.4°S latitude and 252.8°W longitude. It is 132.0  km in diameter and was named after Emmanuel Liais, and the name was approved in 1973 by the International Astronomical Union (IAU) Working Group for Planetary System Nomenclature (WGPSN).[1]

Why craters are important

The density of impact craters is used to determine the surface ages of Mars and other solar system bodies.[2] The older the surface, the more craters present. Crater shapes can reveal the presence of ground ice.

See also


  1. "Gazetteer of Planetary Nomenclature | Liais". International Astronomical Union. Retrieved 4 March 2015.<templatestyles src="Module:Citation/CS1/styles.css"></templatestyles>

Recommended reading

  • Grotzinger, J. and R. Milliken (eds.). 2012. Sedimentary Geology of Mars. SEPM.