Earlier this summer we reported that Destiny for Playstation 4 required a hefty 40GB space of your hard drive.
Now VG247 reports that Xbox One has the very same demands, since some lucky soul got their retail copy early (though the game can't be started properly until the servers come on next week).
Regardless of which, start cleaning out those hard drives because Destiny is coming. A space game that also demands space - a lot of it.