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