I am aware of some biological experiments on Martian soil that were conducted during the early days of space exploration (Viking). These tests were supposedly inconclusive, and we were not really looking in the most likely place anyways. Besides that, I have heard only about exploration missions to check for geological and atmospheric features that could suggest habitability, but no experiments aimed at detecting life itself. Additionally, I find that most people seem to think we have essentially been scouring Mars and elsewhere for life, but haven't found anything; sometimes this is in the form of an argument that life on Mars doesn't exist. Given all of the extreme places we find life on Earth, I think that microbial life on Mars (and elsewhere outside earth and within reach) is not too unlikely at all. And it's somewhat frustrating that we seem to not be actually looking. Am I wrong? Have we tried, or will try to detect extraterrestrial life besides Viking? Why no plans to send submarines to any of the oceanic worlds in our solar system? Will we even bring the stuff to detect life if we ever do? Why no attempt to detect life in core samples on Mars? Am I the only one annoyed that we keep sending probes to the outer solar system only to take pictures? Is it really difficult to do more? How many years do you think it will be before we try to detect life again? Do you think private explorers will beat our space agencies to the punch?