The 7 days of 365 Days of Astronomy for week 42 2009. This week the shows include:

• Oct 15: The Jewish Calendar, or "When is Passover this Year Anyway?" by Zachary Kessin and Rabbi Hillel Mazels.
• Oct 16: Our Growing Galaxy by Sue Ann Heatherly.
• Oct 17: The Search for WIMPs by Jimmy Erickson.
• Oct 18: Geometry Vs. Lunacy by Mark Thompson.
• Oct 19: When Galileo Fell Into Jupiter by Adam Fuller from Columbia Astronomy.
• Oct 20: Mercury: Close Encounter for the Third Time by Bob Hirshon.
• Oct 21: 125 Years of the Prime Meridian at Greenwich by Marek Kukula of the Royal Observatory, Greenwich.