Jan 5th: Electromagnetism by Steve Nerlich | Jan 5, 2017 | Cheap Astro Cheap Astronomy explores some highly-charged and polarising issues. read more
September 25th: Modern Telescopes and Observation Techniques by The Adler Planetarium | Sep 25, 2009 | Adler Planetarium, Podcast read more
May 12th: Michael Turner on Dark Energy by Michael Koppelman | May 12, 2009 | Podcast, Slacker Astronomy read more