Commentary
A Teacher, a Student and a Church-State Dispute
- Letter to the Editor, New York Times, December, 21, 2006.
Blue Collar Intellectuals
- Guest blogger, The Planetary Society, July-August 2006.
Where Even the Sky is No Limit
- Op-Ed, Florida Today, November 25, 2002. Review of some principal findings on the space industry from the Aerospace Commission's final report to the President.
- World Trade Center Anniversary
- Letter to the Editor, New York Times, September 11, 2002. On why I choose to not commemorate the WTC anniversary.
Destiny in Space
- Op-Ed, New York Times, January 1, 2001. Comparison of modern space exploration with that portrayed in the film 2001: A Space Odyssey.
Misaligned Stars
- Op-Ed, New York Times, July 22, 1998. Rant on the absence of scientific advisors for popular films that tap science themes.

