It is believed gravity is needed for a boomerang to fly back to the throwing spot, but no one has tried in zero gravity.
"Mr Doi said he will personally carry a paper boomerang for the upcoming mission and we presume he will try it when he has spare time,'' said an official of the Japan Aerospace Exploration Agency.
(Via Aberrant News.)
Wait a second -- he's throwing a boomerang in a space station? Is this a good idea? Judging from the photos I've seen, there's hardly room to piss inside the International Space Station, let alone engage in recreational pastimes. Plus, what if he hits something, you know, important, like an airlock toggle or an attitude control thruster?
I'm just saying.