Do Aliens Exist On Mars?
I think they might because through evolution, instead of oxygen to keep their bodies going, they could inhale carbon dioxide and exhale oxygen ex, plants. You never know what kind of environments may suit an alien. They might be so advanced that they are disguising their planet and we are searching on mars for no reason what so ever, they might even be living inside of Mars, or Mars may have been unsustainable for life to continue, so they expanded out into space. You never know.
