A team of astronomers believe there could be billions of “super-Earths” in the Milky Way galaxy.
The astronomers, using the European Southern Observatory’s HARPS planet finder, estimate there are tens of billions of rocky planets not much larger than Earth around faint red stars. They estimate these red dwarf stars, fainter than the Sun but common and long-lived, make up 80 percent of all the galaxy’s stars.-[source]
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