Astronomers have figured out which planets are best to look for life

Some exoplanets have one side constantly facing their parent star, while the other side is

in eternal darkness.The ring boundary between these permanent daytime and nighttime regions is called the “terminator zone.” Employees of the University of California at Irvine conducted a study and found that it can support extraterrestrial life.

Such planets are especially common because they exist around red M dwarfs, which are relatively dimmer than our Sun. They are more common than others in the Milky Way (more than 70% of them).

A red dwarf is small and relativelya cool main sequence star with spectral class M. They are quite different from other stars. The diameter and mass of red dwarfs does not exceed a third of the solar mass (the lower limit of mass is 0.0767 solar, followed by brown dwarfs).

On the dark sides of planets with a terminator zoneEternal night would lead to a sharp drop in temperature, causing any water to freeze to ice. The side of the planet that always faces the star is likely too hot for water to remain on the surface for long.

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