Questions and Answers

Ask the Astronomer – The Top-100 most frequently asked questions at Ask the Astronomer from 1995 to 2015! Over 10 million requests for these FAQs. What is Dark Matter? Will Betelgeuse become a supernova? Can a planet ever explode? And many others!!! ($9.26; 10 tables; 156 pages)  Purchase book at

This all-text E-book contains the Top-100 of these FAQs with answers updated to 2023. At a price of only $3.00, you will likely find answers to many of your own questions about astronomy, space exploration and space travel within its 100,000-words. If the response is good for this E-book I will look forward to doing annual updates to it every Fall, so please support this public education effort if you can!




Solar System


Black Holes

The Universe

Space Travel

Check out my two books on interstellar and interplanetary travel from an astronomer’s point-of-view! They cover destinations, what we will do when we get there and, of course, ideas about propulsion and hazards along the way.

Gravity and Space

Everything Else!