Galileo's Pendulum

Today’s Moonday post is a guest article by Geneviève de Messières. On New Year’s Eve, Maria Zuber and her team of 60 were not partying with friends, family and a glass of bubbly.  They were at work, at Mission Control at the Jet Propulsion Laboratory (JPL) in Pasadena, California, but no one complained.  They were…