Link to How the universe works: 8- Alien moons documentary
Documentary Description
Recent explorations have revealed moons to be the chemistry labs of the
cosmos and the most likely places where we might find life beyond our
planet. While some moons are no more than asteroids caught by the snare
of gravity; others are part of giant family systems and almost planets
in their own right. Some of the most diverse worlds in the Universe, we
know of 300 moons just in our own Solar System, but there may be
billions. How these moons are born, live, and die is fundamental to
understanding our planet's turbulent origins and our place in the
Universe.