Here's every show we've done. Newest First.

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astronomycast.com/podcast.xml

Posted	Episode	Title	Download the episode
6/8/2009	141	Volcanoes, Hot and Cold	Download
6/4/2009	Questions	Galileoscope, Black Hole Time, and What Exactly is Energy?	Download
6/1/2009	140	Entanglement	Download
5/28/2009	Questions	Telescope Suggestions, Black Hole Energy, and Universal Time	Download
5/25/2009	139	Energy Levels and Spectra	Download
5/21/2009	Questions	An Unlocked Moon, Energy Into Black Holes, and the Space Station's Orbit	Download
5/18/2009	138	Quantum Mechanics	Download
5/14/2009	Questions	Hidden Fusion, the Speed of Neutrinos, and Hawking Radiation	Download
5/11/2009	137	Large Scale Structure of the Universe	Download
5/7/2009	Questions	The Source of Atmospheres, the Vanishing Moon, and a Glow After Sunset	Download
5/4/2009	136	Gamma Ray Astronomy	Download
4/30/2009	Questions	Dangerous Solar Flares, Higgs Boson Insights, and Light Speed Flashlights	Download
4/27/2009	135	X-Ray Astronomy	Download
4/23/2009	Questions	NorthEast Astronomy Forum (NEAF)	Download
4/20/2009	134	Ultraviolet Astronomy	Download
4/13/2009	133	Optical Astronomy	Download
4/9/2009	Questions	Undoing Inflation, Searching for Water, and Seeing Everything a Black Hole's Ever Eaten	Download
4/6/2009	132	Infrared Astronomy	Download
3/30/2009	131	Submillimeter Astronomy	Download
3/26/2009	Questions	Decelerating Black Holes, Earth-Sun Tidal Lock, and the Crushing Gravity of Dark Matter	Download
3/23/2009	130	Radio Astronomy	Download
3/12/2009	Questions	Multiple Big Bangs, Satellite Collisions and the Size of the Universe	Download
3/9/2009	129	Interferometry	Download
3/5/2009	Questions	Shooting Lasers at the Moon and Losing Contact with Rovers	Download
3/2/2009	128	Dust	Download
2/16/2009	127	The US Space Shuttle	Download
2/9/2009	126	From Skeptics Guide with Questions	Download
2/2/2009	125	A Zoo of Extrasolar Planets	Download
1/22/2009	Questions	Moons and the Drake Equation, Stars in the Void, and Rings Around Stars	Download
1/18/2009	124	Space Capsules, Part 1 – Vostok, Mercury and Gemini	Download
1/9/2009	123	Homogeneity	Download
1/6/2009	122	How Old is the Universe?	Download
1/1/2009	Questions	Stellar Roche Limits, Seeing Black Holes, and Water on Mars	Download
12/29/2008	121	Spacesuits	Download
12/23/2008	120	The Christmas Star	Download
12/18/2008	Questions	Different Fields of Astronomy, Our Sibling Stars, and Hidden Lagrange Points	Download
12/15/2008	119	Robots in Space	Download
12/12/2008	Questions	Distance in Space, Changing Earth's Orbit, and Different Sized Stars	Download
12/12/2008	118	Sky Surveys	Download
12/4/2008	117	Time	Download
11/27/2008	116	Molecules in Space	Download
11/18/2008	115	The Moon, Part 3: Return to the Moon	Download
11/18/2008	Questions	Spiral Arms, Seismic Waves on the Sun, and our Favorite Gear	Download
11/10/2008	114	The Moon, Part 2 – Exploration of the Moon	Download
11/06/2008	Questions	Ice in Space, Expansion of the Universe, and Death from the Skies	Download
11/03/2008	113	The Moon, Part 1	Download
10/30/2008	Questions	Orbit of the Planets, Green Stars, and Oort Cloud Contamination	Download
10/27/2008	112	Death From the Skies, Interview with Phil Plait	Download
10/23/2008	Questions	Relativity, Relativity and More Relativity	Download
10/21/2008	111	Nebulae	Download
10/20/2008	Questions	Galactic Dust, the Speed of Photons, and the Big Bang Calculations	Download
10/14/2008	110	The Search for Extraterrestrial Intelligence	Download
10/10/2008	Questions	Alignment with the Galactic Plane, Destruction from Venus, and the Death of the Solar System	Download
10/06/2008	109	The Life of Other Stars	Download
10/02/2008	Questions	Running Out of Gravitons and Hitting the Brakes at Light Speed	Download
09/30/2008	108	The Life of the Sun	Download
09/26/2008	Questions	Light Speed, Andromeda Galaxy, Dark Matter and Black Holes	Download
09/22/2008	107	Nucleosynthesis: Elements from Stars	Download
09/18/2008	Questions	Black Hole Surfaces, Magnetic Field Strengths, and the Speed of Gravitons	Download
09/15/2008	106	The Search for the Theory of Everything	Download
09/08/2008	105	The Strong and Weak Nuclear Forces	Download
09/04/2008	104	Science Fiction at Dragon*Con with Plait and Grazier	Download
08/28/2008	103	Electromagnetism	Download
08/19/2008	102	Gravity	Download
08/12/2008	101	Advanced Propulsion Systems	Download
08/04/2008	100	Rockets	Download
07/28/2008	99	The Milky Way	Download
07/21/2008	98	Quasars	Download
07/15/2008	97	Galaxies	Download
07/08/2008	96	Humans to Mars, Part 3 – Terraforming Mars	Download
06/30/2008	95	Humans to Mars, Part 2 – Colonists	Download
06/23/2008	94	Humans to Mars, Part 1 – Scientists	Download
06/17/2008	93	Missions to Mars, Part 2	Download
06/10/2008	92	Missions to Mars, Part 1	Download
06/02/2008	91	The Search for Water on Mars	Download
05/26/2008	90	The Scientific Method	Download
05/19/2008	89	Adaptive Optics	Download
05/12/2008	88	The Hubble Space Telescope	Download
05/05/2008	87	The End of the Universe Part 2: The End of Everything	Download
04/28/2008	86	The End of the Universe Part 1: The End of the Solar System	Download
04/21/2008	85	Detectors	Download
04/14/2008	84	Getting Around the Solar System	Download
04/07/2008	83	Wave Particle Duality	Download
03/31/2008	82	Space Junk	Download
03/24/2008	81	Questions on the Size, Shape and Centre of the Universe	Download
03/17/2008	80	Craters	Download
03/10/2008	79	How Big is the Universe	Download
03/03/2008	78	What is the Shape of the Universe	Download
02/25/2008	77	Where is the Centre of the Universe	Download
02/18/2008	76	Lagrange Points	Download
02/11/2008	75	Stellar Populations	Download
02/04/2008	74	Antimatter	Download
01/28/2008	73	Questions Show #8	Download
01/21/2008	72	Cosmic Rays	Download
01/14/2008	71	Gravitational Waves	Download
01/07/2008	70	How To Win a Nobel Prize	Download
12/31/2007	69	The Large Hadron Collider and the Search for the Higgs-Boson	Download
12/24/2007	68	Globular Clusters	Download
12/17/2007	67	Building a Career in Astronomy	Download
12/10/2007	66	How Amateurs Can Contribute to Astronomy	Download
12/03/2007	65	The End of Our Tour Through the Solar System	Download
11/26/2007	64	Pluto and the Icy Outer Solar System	Download
11/19/2007	63	Neptune	Download
11/11/2007	62	Uranus	Download
11/05/2007	61	Saturn's Moons	Download
10/29/2007	60	Questions on Inflation	Download
10/22/2007	59	Saturn	Download
10/15/2007	58	Inflation	Download
10/08/2007	57	Jupiter's Moons	Download
10/01/2007	56	Jupiter	Download
09/24/2007	55	Asteroid Belt	Download
09/17/2007	54	Questions Show #6	Download
09/10/2007	53	Astronomy in Science Fiction	Download
09/03/2007	52	Mars	Download
08/27/2007	51	Earth	Download
08/20/2007	50	Venus	Download
08/13/2007	49	Mercury	Download
08/06/2007	48	Tidal Forces Across the Universe	Download
07/30/2007	47	Tidal Forces	Download
07/23/2007	46	Stellar Nurseries	Download
07/16/2007	45	The Important Numbers in the Universe	Download
07/09/2007	44	Einstein's Theory of General Relativity	Download
07/02/2007	43	Questions, Questions #5	Download
06/25/2007	42	Magnetism Everywhere	Download
06/18/2007	41	The Rise of the Supertelescopes	Download
06/11/2007	40	American Astronomical Society Meeting May 2007	Download
06/04/2007	39	Astrology and UFOs	Download
05/28/2007	38	Neutron Stars and their Exotic Cousins	Download
05/21/2007	37	Gravitational Lensing	Download
05/14/2007	36	Gamma-Ray Bursts	Download
05/07/2007	35	Questions Show #4	Download
04/29/2007	34	Discovering Another Earth	Download
04/23/2007	33	Choosing and Using a Telescope	Download
04/16/2007	32	The Search for Neutrinos	Download
04/09/2007	31	String Theory, Time Travel, White Holes, Warp Speed, Multiple Dimensions, and Before the Big Bang	Download
04/02/2007	30	The Sun, Spots and All	Download
03/26/2007	29	Asteroids Make Bad Neighbors	Download
03/19/2007	28	What is the Universe Expanding Into?	Download
03/12/2007	27	The Third Question Show	Download
03/05/2007	26	The Largest Structures in the Universe	Download
02/26/2007	25	The Story of Galaxy Evolution	Download
02/19/2007	24	The Fermi Paradox: Where are all the Aliens?	Download
02/12/2007	23	Counting Aliens with the Drake Equation	Download
02/05/2007	22	Variable Stars	Download
01/29/2007	21	Answer Show: Black Hole Questions Answered	Download
01/21/2007	20	What We Learned from the American Astronomical Society	Download
01/15/2007	19	Comets, Our Icy Friends From the Outer Solar System	Download
01/07/2007	18	Black Holes Big and Small	Download
01/01/2007	17	Where Does the Moon Come From?	Download
12/25/2006	16	Across the Electromagnetic Spectrum	Download
12/18/2006	15	Answer Show: Listener Questions Answered	Download
12/11/2006	14	We're all Made of Supernovae	Download
12/04/2006	13	Where Do Stars Go When They Die?	Download
11/27/2006	12	Where Do Baby Stars Come From?	Download
11/20/2006	11	A Universe of Dark Energy	Download
11/13/2006	10	Measuring Distance in the Universe	Download
11/06/2006	9	Einstein's Theory of Special Relativity	Download
10/30/2005	8	Meteor Showers. Yes, the sky is falling.	Download
10/23/2006	7	Getting Started in Amateur Astronomy	Download
10/16/2006	6	More Evidence for the Big Bang	Download
10/09/2006	5	The Big Bang and Cosmic Microwave Background	Download
10/01/2006	4	The Search for Dark Matter	Download
09/22/2006	3	Hot Jupiters and Pulsar Planets	Download
09/19/2006	2	In Search of Other Worlds	Download
09/10/2006	1	Pluto's Planetary Identity Crisis	Download

Note on enhanced versions: We briefly experimented with enhanced versions of the podcasts with pictures. It didn't work out so well, but if you still want to download the episodes, you can access them here: 22, 23, 24, 25, 26, 27.