They may have atmospheres and water from "summary" of Exoplanets and Alien Solar Systems by Tahir Yaqoob
Some exoplanets, like those in our own solar system, may have atmospheres and water. This is an exciting prospect because both of these characteristics are essential for supporting life as we know it. Having an atmosphere means that the planet is able to trap heat from its host star, which can help regulate temperatures and create conditions that are conducive to life. An atmosphere can also protect a planet from harmful cosmic radiation and impacts from space debris. Water is another key ingredient for life as we know it. It is a universal solvent, meaning that it can dissolve a wide variety of substances, making it an ideal medium for chemical reactions. Water is also essential for many biological processes, serving as a solvent for nutrients and waste products, as well as a medium for transporting these substances around an orga...
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