Week 67 (Apr 08 - Apr 14)

This week the shows include: Apr 08: Making the VASIMR Engine by Sawyer Rosenstein and Montserrat Cordero; Apr 09: NASA’s Basement Tapes by Bob Hirshon, AAAS; Apr 10: Introduction to Practical Astronomy by Justin Clayden; Apr 11: Celestial Coordinates by Mark DeVito; Apr 12: A Planetary Defense System by Steve Nerlich; Apr 13: The Rescue of Apollo 13, with NASA Engineer Jerry Woodfill by Nancy Atkinson; Apr 14: What is Astronomy? by Carolyn Collins Petersen.