"It is very interesting that the signal penetrated quite easily through about 2 kilometers (1.2 miles) of material in the crater and that suggests to us that material is probably ice-rich."
- Jeffrey Plaut, Ph.D., JPL
December 16, 2005 Pasadena, California - Far from Earth is a mystery that scientists are trying to solve from an orbiting spacecraft that is now looking below the surface of Mars with deep ground-penetrating radar. It's called "MARSIS," which stands for Mars Advanced Radar for Subsurface and Ionosphere Sounding.
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