Smashinz_1885 said:The second quote concerning the fish is absurd. A fish cannot comprehend anything other than it's search for food. Even if it could comprehend 'water', there would be no way to detect if it were capable of comprehending such, as we have no process to communicate with fish. Therefore, the fish quote is ridiculous, and absurd.
A habitable exoplanet or moon is a celestial body that has the potential to support life, either through the presence of liquid water or other necessary conditions for life to exist.
The minimum mass required for a habitable exoplanet or moon is debated among scientists, but it is generally accepted that it must be at least 0.5 Earth masses. This is because a smaller mass may not be able to retain a thick enough atmosphere to support life.
Yes, a moon can be habitable if it meets the necessary conditions for life to exist, such as having a solid surface, liquid water, and a stable atmosphere. For example, Jupiter's moon Europa is considered a potential candidate for life due to its subsurface ocean.
As of now, there are no confirmed habitable exoplanets or moons. However, there are several potential candidates that are being studied, such as Proxima Centauri b and TRAPPIST-1e.
Scientists use a variety of methods to determine if an exoplanet or moon is habitable. These include studying the planet's distance from its star, its composition and atmosphere, and the potential for liquid water to exist on its surface. They also look for signs of organic compounds, which could indicate the presence of life.