Scientists have come up with a new way to search for water and life on exoplanets

The low concentration of CO2 on Earth is due to the fact that this gas is absorbed by the huge volume of water on Earth. The higher the CO2 concentration, the less water on the exoplanet, and vice versa. But the presence of water alone does not guarantee the origin of life on a cosmic body. This is only a basic marker, for example, because the James Webb Space Telescope is very good at measuring CO2 levels on exoplanets.