public StellarEvent(StellarEvent s)
 {
     EventType = s.EventType;
     EventDesc = s.EventDesc;
     EventYear = s.EventYear;
     FormattedEventYear = Utility.FormatForAstronomicalYear(s.EventYear);
 }
 public void AddLogEvent(StellarEvent newEvent)
 {
     LoggedEvents.Add(newEvent);
     NotifyPropertyChanged("LoggedEvents");
 }