What are the aliens on Mars?

Answer:
It was recently discovered that Mars used to have microorganisms living in its polar ice caps. At the time, the ice caps used to form ancient oceans, and Mars's being a reasonable distance from the Sun provided researches with a basis for which the organisms were formed.
First answer by Corvette4t. Last edit by Corvette4t. Contributor trust: 463 [recommend contributor recommended]. Question popularity: 1 [recommend question].