Welcome to the shortest day of the year! That means it is also the longest night, so I hope you can get some extra #sleep . During medieval times people saw this as a time for the celebration of death and rebirth, and even now, in many parts of the world, it is still celebrated! Did you know that on this day, Pierre and Marie Curie discovered Radium? And years later, on the same day, Apollo 8 was launched! #Science #culture Video Credits: National Geographic …see more