Saturn's Moon Dione
How much cooler would the night sky be if our moon looked like this:
Not only would our night sky be more dramatic, but there would be more reason to visit it since Dione is mostly water ice (probably with a rocky core). Missions could use that ice to support humans on the surface and to establish colonies. If you ever wondered why we keep crashing spacecraft into the moon, it’s because we’re looking for evidence of ice on the moon’s surface or subsurface. Read more over at APOD.