Planets in the Habitable Zone

The James West Space Telescope has been as always releasing more exciting stuff. The habitable zone is just that region around the Sun where on the surface of the planet you could have liquid water any closer to the host star and the liquid water is going to boil any further away from the host star. Even within our own solar system the moon of Europa we think it's solid on the surface but there might be a liquid ocean of water underneath which could support an ecosystem.