Dose life exixts on other planets?

In my own Words, I can say that there is at least one plantet in alot of solor systems. In every Galaxy, there are about 70 trillion stars. each one is a solar system. In the entire Outer space, We cannot even begin to think how many galaxies there are in the universe. How many planets does that make? I would think there has to be at least a cell somwhere in that. Regaurding harsh enviornments? Things can evolve to cope with the enviornment, and there are probaly planets out there like earth, that could support creatures like on our planet.