New discoveries on Mars and distant moons suggest that there might be alien life in our solar system and beyond, and using the latest technology, experts are closer than ever to finding extraterrestrial intelligence. This is a mashup of "How the Universe Works" S07E09 "Finding the New Earth" and S07E08 "Hunt for Alien Life", plus another Science Channel show "Space's Deepest Secrets "S06E02 "Secrets of the Seven Earths".