Icy moons like Enceladus could have oceans under their icy surfaces, heated by internal processes, making them potentially habitable for alien life. Moons in close orbits to their host planet are more likely to have habitable environments, regardless of the planet's distance from the star. The number of habitable exomoons could exceed habitable exoplanets, expanding the potential locations for extraterrestrial life beyond the traditional habitable zone.