Week 21 (May 21 - May 27)

The 7 days of 365 Days of Astronomy for week 21 2009. This week the shows include: * May 21: Hanny's Voorwerp and the Galaxy Zoo by Ted Judah. * May 22: Mars Exploration: A Quick History by Susan and Amanda Murph. * May 23: A Cheap "Name a Star" Gift for Graduates by Bruce Palmquist. * May 24: We're Expanding - and Accelerating! by Brains Matter. * May 25: Tides: More Than What Floats Your Boat by Robert Morehead from Columbia Astronomy. * May 26: Astronomer George Ellery Hale by Scott Kardel. * May 27: Smiley, the Little Dish that Could by Christi Whitworth.