There are currently about fifty known exoplanets whose diameters range from Mars-sized to several times the Earth's and which also reside within their stars' habitable zone - the orbital distance within which their surface temperatures permit liquid water. These exoplanets are currently our best candidates for hosting life.
There are currently about fifty known exoplanets whose diameters range from Mars-sized to several times the Earth's and which also reside within their stars' habitable zone - the orbital distance within which their surface temperatures permit liquid water. These exoplanets are currently our best candidates for hosting life.
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