Astronomers had claimed last year that the planet named Gliese 581d did not exist. However, researchers are now claiming that Gliese 581d, which was initially identified in 2009 orbiting the star Gliese 581, does exist, and that last year’s claim was triggered by inadequate analyses of the data.
In 2009, Gliese 581d hit the headlines as a ‘super-Earth’ that had the potential to support liquid water on its possibly rocky surface. With a mass of around 7 times that of Earth, Gliese 581d would be twice as big with a surface gravity around twice that of Earth. Though extreme, it’s not such a st...
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