Is it possible that there is life on mars or venus ect.?
Humans can’t inhabit Mars or Venus without creating an artificial environment. It is possible that many different life forms exist in the universe, some with very different requirements for life than humans. So it is also possible that life can thrive on a planet that could not support human life (i.e. Mars, Venus), but it highly unlikely that this type of life form would inhabit our solar system. So yes, it is possible that there is life on Mars or Venus (although it is not probable). These lifeforms would be very different from humans and not in the same evolutionary family.