The annual Space Symposium in Colorado is a must-attend event for space leaders from around the world. Our coverage begins with United Arab Emirates Space Agency Director General Mohammed Nasser Al Ahbabi, and then moves to ESA Director General Jan Woerner and Chief Scientist Bernard Foing. Emily Lakdawalla shows us the moon as you’ve never seen it before. SpaceX is rolling on to Mars according to Bill Nye. Bruce Betts and Mat Kaplan learn what a psychopomp has to do with one of our solar system’s most distant worlds.