SUMO boasts 82 kimarite, or techniques, to take down an opponent. But the sport is most notable for pummelling itself.
Michael esser 33 a world champion last year in martial arts for the visually impaired ended up pummelling his17-year-old attacker into submission.
The Moon's heavily cratered surface is the result of intense pummelling by space rocks between 4.1 and 3.8 billion years ago.
