 In 2015 , a team of researchers reanalysed the data and suggested planet Gliese 581 d really could exist , despite stellar variability , and that last year 's claim of the existence of Gliese 581 d and g was triggered by poor and inadequate analysis of the data . Now that Gliese 581 d is widely accepted it is likely that Gliese 581 g 's existence is dependent on the eccentricity of the further out exoplanet Gliese 581 d as suggested by Paul Robertson . 
