Spacecraft exploration of the outer planets and their extensive systems of moons discovered a variety of strange new worlds, some planet-sixed, many challenging conventional science, and some being downright bizarre. Plus, several may even be home to life, despite being well outside the Sun’s “Habitable Zone”!

This discussion surveys many of these fascinating worlds using spectacular imagery and modern scientific ideas, including:

• – Why is Io the most volcanically active world in our Solar System?
• – Can Europa really support life as we know it?
  
• – Can deep water oceans exist inside several large, medium and small worlds?
• – Is Titan a “future Earth” currently stored in “deep freeze”?
• – Can moons collide, break apart, and reform?
• – Current and future space missions to try to obtain some answers.

Many important questions remain, and possibilities are actively debated among planetary scientists.