What If We Discovered Alien Life on Mars? Watch the full episode: youtu.be/x3jQJT0tr4o Questions or concerns? Contact us at underknown.com/contact Interested in sponsoring our episodes or collaborating? Email us: inquiries@underknown.com Get our 100 best episodes in one mind-blowing book: bit.ly/ytc-the-what-if-100-book Join this channel to get access to perks: youtube.com/channel/UCphTF9wHwhCt-BzIq-s4V-g/join Check out our other channels: How to Survive: bit.ly/how-to-survive-show Aperture: bit.ly/aperture-show Crazy Creatures: bit.ly/crazy-creatures-show Your Body On: bit.ly/your-body-on-show Origins of Food: bit.ly/origins-of-food Versus: bit.ly/versus-show WTF Did I Just Watch: bit.ly/wtf-did-i-just-watch Watch more what-if scenarios: Planet Earth: bit.ly/YT-what-if-Earth The Cosmos: bit.ly/YT-what-if-Cosmos Technology: bit.ly/YT-what-if-Technology Your Body: http:...