What Happens When You Go Beyond the Final Frontier?

It was a New Year's Eve like no other. First of all, the big celebration started a half hour after midnight. Children were waving mini-flags, surrounded by throngs of giddy planetary scientists. And four billion miles away, one billion miles past Pluto, the New Horizons spacecraft was flying past an enigmatic object called 2014 MU69--better known by its nickname, Ultima Thule.When radio signals from New Horizons finally reached Earth the next morning, they revealed that the mission was a