How did the Voyager spacecraft manage to weave their magnificent way through the outer planets of our solar system? Mission Design Manager Charley Kohlhase led the team that crunched the numbers to select the best possible trajectory from 10,000 candidates. The results have been astounding. Emily Lakdawalla prepares us for the arrival of Europe’s Exomars orbiter and Schiaparelli lander. Bill Nye says millennials and President Obama share excitement about humans to Mars. Win a copy of “Star Trek: The Official Guide to the Universe” in the What’s Up segment.