a light year is a unit of distance it is the distance that light can travel in one year light moves at a velocity of about 300000 kilometers km each second so in one year it can travel about 10 trillion km more p recisely one light year is equal to 9500000000000 kilometers
Hacker is something no golfer ever wants to be called. Hacker is a derogatory term in golf that means: someone who rarely plays golf so is quite bad when they do; generally, any golfer who is just not very good at it; a mediocre or poor golfer who displays bad golf etiquette and/or poor sportsmanship.
Sandbagging in billiards and other games, deliberately playing below one's actual ability in order to fool opponents into accepting higher stakes bets, or to lower one's competitive rating in order to play in a future event with a higher handicap and consequently have a better chance to win; the term has spread to chess, golf and other such games.