- 30 Years of X-ray Astronomy. Astronomy Open Night, October 3 2003.
- Astronomy From Space. Presented to the Science Club of Long Island, December 17, 2003.
- Introductory Lecture for Astralis Concert, April 2004
- SMARTS: Big Astronomy from Small Telescopes Astronomy Open Night, 1 October 2004
- Life in the Universe. Presented to the Science Club of Long Island, November 30, 2005.
- Variable Stars with SMARTS. AAS Meeting, January, 2005.
- A Little Knowledge Is a Dangerous Thing. Astronomy Open Night, December 2, 2005.
- V471 Tau.
- In Defense of Astronomy. Front Page Discussion, 2015.
- The Once and Future Habitability of Mars. Astronomy Open Night, 2016.
- White Dwarfs: the most interesting boring objects in the universe. Astronomy Open Night, March 2017.
- Solar Eclipses and where to find them: America's Eclipse of August 21 2017. Astronomy Open Night, September 2017. (pdf version)
- The Dark Side of the Sun. Dia de Muertos, 2017 (Astronomy on Tap; Amateur Observing Society; Astronomical Society of Long Island; Custer Observatory 39th Annual Jamboree). (pdf version)
- The SMARTS way to observe: What recent observations tell us about Galactic Novae. Astronomy Open Night, September
- Greenhouse: An Astronomer's View of Global Warming. UUP Climate Strike presentation, 20 September 2019.
- Novae: Taking the Long View. Presentation to the Astronomical Society of Long Island, 11/6/2019
- The Sun in Time: Solar Irradiance and Climate Change. Astronomy Open Night, October 2020.
- The Hubble Space Telescope at 30.5 Years. Hamptons Observatory and East Hampton Library, October 2020.