This week the shows include: May 20: Going Hollywood by Sandy Antunes; May 21: Common Questions and Answers by RapidEye; May 22: Carl Sagan by Craig Robertson; May 23: Were the fundamental constants of physics different in the early Universe? by Rob Knop; May 24: A Mexican Name on the Moon by Edgardo Molina; May 25: Hypervelocity Stars by Brains Matter; May 26: StarryTelling from Takoma Park Middle School by Giraffe 'n Ant Productions.

This week the shows include: May 13: The Square Kilometre Array by the SKA Outreach Team; May 14: Next Generation Space Materials by Bob Hirshon, AAAS; May 15: Griffith Birthday by Carolyn Collins Petersen; May 16: Thermostat by Ben Lillie; May 17: What are Black Holes? by Stuart Clark; May 18: Our Place in Space by Pamela Gay; May 19: It's a Zoo Out There On the Moon! by The NASA Lunar Science Institute.

This week the shows include: May 06: Warp Drive Part 2 by Renata and Damian Handzy; May 07: Citizen Sky by Slacker Astronomy; May 08: How Lunar Cycles Affect Wildlife by Wild Ideas; May 09: Up Close with the Eyjafjallajokull Volcano by Col Maybury and Snaevarr Gudmundsson; May 10: The Late Heavy Bombardment -- was it real? by Emily Lakdawalla; May 11: Speculative Fiction: How The Russians landed on the Moon by C. Augusto Valdés; May 12: Reach for the stars: Advice on a career in astrophysics by Renee Hlozek and Sarah Miller.

This week the shows include: Apr 29: Water on the Moon! by The NASA Lunar Science Institute; Apr 30: Astrotips by The Tecnocasters; May 01: Noche de las Estrellas, Mexico's Nationwide Star Party by Edgardo Molina; May 02: Astronomy in your Pocket: Astronomy Apps for iPhone by Mark DeVito; May 03: Hippocrates meets Hipparchus by Mike Vagg; May 04: Lapetus and the Cassini Regio by Alice Enevoldsen; May 05: The Continuing Copernican Revolution by Rob Knop.

This week the shows include: Apr 22: A Space Journalist's Big Adventure by Col Maybury; Apr 23: Location, Location, Location! by Sue Ann Heatherly, of NRAO; Apr 24: Ophiuchus- the 13th Sign of the Zodiac by Mike Simonsen; Apr 25: The Moon-Our Sidekick by Rob Berthiaume; Apr 26: Mariners, Cancer and Bombs by Ben Lillie; Apr 27: The Green Flash by Rob Sparks; Apr 28: StarryTelling (TM) at the British School of Washington by The British School of Washington.

This week the shows include: Apr 15: Creativity and Astronomy by Tatiana Ouvarova; Apr 16: Building Your Career in Astronomy by AstronomyCast; Apr 17: Was Einstein Right? by Stuart Clark; Apr 18: Uranus: Not Just the Butt of Jokes by Emily Temple-Wood; Apr 19: Starry-Telling at Parkland Middle School by Elizabeth Wallace; Apr 20: Megamasers by Richard Drumm; Apr 21: Sudden Ionospheric Disturbances by Jim Stratigos.

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.

This week the shows include: Apr 01: BREAKING NEWS! Pluto Regains Planet Status! by Patrick McQuillan; Apr 02: Richard Emmons by Brian Gray; Apr 03: Interview with Robert Naeye of Sky & Telescope, Part 2 by Slacker Astronomy; Apr 04: Introduction to the Theory and Practice of Jovian Radio Astronomy by Edgardo Molina; Apr 05: Sightings: Seth Shostak and SETI by Ted Judah; Apr 06: Cosmology and Creation - Many Stories, Many Skies At Perth's Gravity Discovery Centre by Kylie Sturgess; Apr 07: Wooden Satellites by Sandy Antunes.

This week the shows include: Mar 25: The Mirrors that Make James Webb by Roz Brown/Ball Aerospace; Mar 26: Whence Supernovae by Rob Knop; Mar 27: A Scale Model of the Universe by Rob Wolfram; Mar 28: How Long Can the International Space Station Operate? by Nancy Atkinson; Mar 29: Dr. Debunko by The Adler Planetarium; Mar 30: Fred Hoyle by Craig Robertson; Mar 31: Dr. Who and the Silver Spiral by Megan Argo.

This week the shows include: Mar 18: Father and Son at the Eyepiece by Edward Gomez; Mar 19: Why Go to the Zoo? by Dr. Alex (Sandy) Antunes; Mar 20: The March Equinox: International Unity Day by Judith Young; Mar 21: Dark Skies Crusader Sheds Light on Light Pollution by Constance Walker; Mar 22: Detecting Moons Around Extrasolar Planets by Adam Fuller; Mar 23: What Can the Dark Matter Be? by Steve Nerlich; Mar 24: Broken Teeth and the Fate of the Universe by Ben Lillie.