Board Thread:Warhammer 40k General Discussion/@comment-86.7.138.66-20130615215334/@comment-6078851-20130905005511

while gravity is (theoretically) infinite, the gravity between galaxies is infintesimal compared to the gravity produced by stars. i can easily envisage tyranids manipulatng the powerful gravity of stars for ftl, but i seriously doubt they can manage ftl between galaxies because, as du'un points out, they (probably) don't have the psychic might to increase the availability of gravity, but mostly because their intergalactic journey takes aeons, which they spend in a state of frozen hibernation and so aren't even awake to try and manipulate gravity.