Growing up, I had a brother who would point to the stars and yell, “Look, Kohoutek!”  Kohoutek is a comet that passed by earth in 1973.  Prior to 1973, Kohoutek had not been seen from earth for 150,000 years.  The media played up Kohoutek as the “Comet of the Century.”  When I looked up to view Kohoutek in response to my brother’s yell, he would take the opportunity to sucker punch me with some brotherly love.