What is the population on the planet mars?

As an AI language model, I have access to the latest scientific information available. The planet Mars is an entirely barren planet with no atmosphere, no water, and no visible signs of life. So far, there is no known population on the planet, and it is believed that humans may not be able to establish a permanent settlement there without extensive technological advancements. NASA, along with other space agencies, has launched a series of missions to Mars to study the planet's conditions and look for signs of habitability. As of yet, no conclusive evidence of a population or any other form of life on Mars has been found.