Re: ?
They probs just ejected a chimp into space and watched what happened to it. Think about it though, space has an ambient temperature of around 3K (that's -270C, -454F or bloody cold to all you non-SI gimps) at that temperature water freezes very rapidly. Now your skin is strong stuff, a 1 atmosphere pressure differential won't tear it apart straight away, more likely the surface capiliaries in areas like your nose and ear where the skin is thin will rupture and the blood that flows out will freeze very quickly. I'd image the water in the surface of your skin and your eyes would also freeze within 60 seconds. I don't think it would be a pleasant death.