GMU Associate Professor Emeritus; NASA/JPL Solar System Ambassador (volunteer). Opinions are my own. Links are not endorsements.
Fairfax, Virginia
Joined February 2009
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"November is here. And what a great month it is, for both planets and meteor showers!" see youtube.com/watch?v=LOIbwoMr…
Robert Waldo Ellsworth, an accomplished scientist who brought his love of physics to everything from the study of subatomic particles to the toys he built for his children, died on August 6. He was 89 years old.
"My [Neil deGrasse Tyson] thoughts on the first round of UFO files" see youtube.com/watch?v=rXch3N4C…
"Venus-Jupiter Conjunction: What, When, How to Watch" see youtube.com/watch?v=QXKNJHhs…
Today at 1 PM EDT watch @AlanStern debate Pluto's planethood. See youtube.com/watch?v=tIr7RO4q…
Live debate today (1PM EDT) regarding Pluto and its planethood. See youtube.com/watch?v=tIr7RO4q…