| 66 | | * Cameron Hummels - Monday, April 27th '''Will the World End in 2012?''' |
| 67 | | * Robert Morehead - Monday, May 25th '''Tides: More Than What Floats Your Boat.''' |
| 68 | | * Maureen Teyssier - Monday, June 1st |
| | 66 | * Cameron Hummels - Monday, April 27th [wiki:Outreach/Podcasts/20090417 '''Will the World End in 2012?'''] |
| | 67 | * Robert Morehead - Monday, May 25th [wiki:Outreach/Podcasts/20090525 '''Tides: More Than What Floats Your Boat'''] |
| | 68 | * Maureen Teyssier - Monday, June 1st |
| 70 | | * Josh Schroeder - Wednesday, June 17th '''The Big Bang! ''' |
| 71 | | * Sarah Tuttle - Monday, July 27th '''Astronomical Ballooning - Or, What Goes Up Must Come Down''' |
| 72 | | * Lia Corrales - Monday, August 3rd '''Black Hole Street Smarts''' |
| 73 | | * Adam Fuller - Monday, August 10th '''What happened to Saturn's rings?''' |
| 74 | | * Holly Larson - Monday, August 24th '''The Reemergence of Planetary Science: Revisiting Percival Lowell''' |
| 75 | | * Destry Saul - Monday, August 31st '''The Accidental and Amateur Birth of Radio Astronomy''' |
| 76 | | * Duane Lee - Monday, September 28th '''The Connection between Metal Abundances and the Evolution of Galaxies''' |
| 77 | | * Marcel Agueros - Monday, October 19th |
| 78 | | * Nitza Santiago - Sunday, November 8th '''Radio Astronomy: An Important Tool''' |
| 79 | | * Lia Corrales - Monday, November 23rd '''The Extraterrestrials in Your Back Yard''' |
| 80 | | * Adam Fuller - Monday, November 30th '''When Galileo fell into Jupiter''' |
| | 70 | * Josh Schroeder - Wednesday, June 17th [wiki:Outreach/Podcasts/20090617 '''The Big Bang!'''] |
| | 71 | * Sarah Tuttle - Monday, July 27th [wiki:Outreach/Podcasts/20090727 '''Astronomical Ballooning - Or, What Goes Up Must Come Down'''] |
| | 72 | * Lia Corrales - Monday, August 3rd [wiki:Outreach/Podcasts/20090803 '''Black Hole Street Smarts'''] |
| | 73 | * Adam Fuller - Monday, August 10th [wiki:Outreach/Podcasts/20090810 '''What happened to Saturn's rings?'''] |
| | 74 | * Holly Larson - Monday, August 24th [wiki:Outreach/Podcasts/20090824 '''The Reemergence of Planetary Science: Revisiting Percival Lowell'''] |
| | 75 | * Destry Saul - Monday, August 31st [wiki:Outreach/Podcasts/20090831 '''The Accidental and Amateur Birth of Radio Astronomy'''] |
| | 76 | * Duane Lee - Monday, September 28th [wiki:Outreach/Podcasts/20090928 '''The Connection between Metal Abundances and the Evolution of Galaxies'''] |
| | 77 | * Marcel Agueros - Monday, October 19th [wiki:Outreach/Podcasts/20091019 '''I Keep Planets in Orbit: Astronomy in Hip Hop'''] |
| | 78 | * Nitza Santiago - Sunday, November 8th [wiki:Outreach/Podcasts/20091108 '''Radio Astronomy: An Important Tool'''] |
| | 79 | * Lia Corrales - Monday, November 23rd [wiki:Outreach/Podcasts/20091123 '''The Extraterrestrials in Your Back Yard'''] |
| | 80 | * Adam Fuller - Monday, November 30th [wiki:Outreach/Podcasts/20091130 '''When Galileo fell into Jupiter'''] |
