That’s what NASA is saying, and where there’s water there could be life…however microscopic it may be:

Whitish, dice-sized chunks, which were dug from the rocky red soil and warmed in the sun, vanished four days after the National Aeronautics and Space Administration’s Phoenix probe dug them up June 15. They confirm what NASA satellites have suggested for years: Frozen water exists several centimeters beneath Mars’s surface. […]

“When I look over this flat plain of rock and dirt, it’s amazing what we’re looking at,” said principal investigator Peter Smith of the University of Arizona in Tucson, which is co- managing the project. “If you got a giant broom and swept if off, it’s a big ice sheet.”

Here’s the closeup of the before and after photos of the small chunks they’re talking about…

Very exciting stuff.

Technology Ice On Mars?