Science Cafe: Rocket Science, Encore Presentation

After 129 successful space shuttle missions over the last three decades, space travel has begun to feel a bit unremarkable. But the engineers and researchers who are widely known as "rocket scientists" are doing and have done some pretty astounding things. We have put robots on Mars--they're still sending pictures back. We've sent probes to explore Saturn's rings. Researchers are working on ideas as wild as antimatter propulsion systems and using Neptune's atmosphere to fuel trips beyond the solar system. On the next Sound of Ideas: the latest innovations in rocket science. Wednesday at 9 on 90.3.