The National Aeronautics and Space Administration recently revealed some photographs, which were tracked by their  HiRISE instrument. These photographs show some of the mysterious circles on the surface of the Mars.

Scientists alleged that these are the signs of the South Polar layer deposits.

As per the reports, NASA revealed a statement, "Measuring the sizes and frequency of impact craters provides a constraint on the age of the landscape. However, craters in icy terrain are modified by processes that flatten and change them in such a manner that it is hard to say for sure if it had an impact origin."

Kevin Vipavetz from NASA’s Langley Research Center in Hampton, Virginia, said in a statement, "After a day dedicated to identifying needs, goals and constraints we rapidly assessed many crazy, out of the box ideas and finally converged on the current Ice Home design, which provides a sound engineering solution."

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