Themes removed a sentence about homages to other space films as being synthesis I reverted this deletion and justify it below with the quote from the article and the line in the current article Numerous articles reference the Ed Harris connection Stone goes floating about in nothing but her underwear it s impossible not to think of Sigourney Weaver s Ripley in Alien evokes Sigorney Weaver s vulnerable Ripley from Alien Gravity floats on the shoulders of the Pixar giants especially WALL E with its mysteriously somber opening sequence and with its comic use of a fire extinguisher which is put to very different use in Gravity the extravehicular use of a fire extinguisher from WALL E