Franck Marchis is on the team that has delivered an actual image of a young, hot world about 100 light years from Earth. We talk with him on the 20th anniversary of the first exoplanet discovery. Emily Lakdawalla reveals spectacular Charon, while Bill Nye and Mat Kaplan compare notes on “The Martian.” What’s a syzygy? Find out from Bruce Betts on What’s Up. More show info and this week’s contest are here: http://www.planetary.org/multimedia/planetary-radio/show/2015/0928-humans-orbiting-mars-workshop-report.html