Week 20 (May 14 - May 20)

The 7 days of 365 Days of Astronomy for week 20 2009. This week the shows include: * May 14: A Tour of Sydney Observatory by The Skeptic Zone Podcast. * May 15: Giant Pulses in the Crab by Sue Ann Heatherly. * May 16: Back to the Dark Ages: Responsible Nighttime Lighting by Connie Walker and Rob Sparks. * May 17: Citizen Scientists - Making a Difference and Having Fun by Tavi Greiner and Rob Keown. * May 18: Life of a Proton by Nik Whitehead. * May 19: When Did Galileo Really Learn About the Telescope? by Mark Thompson. * May 20: The Missing Cosmonauts by Brian Dunning.