About Dennis Mammana

Dennis Mammana

Dennis Mammana

For more than three decades, Dennis Mammana has shared the wonder and mystery of the cosmos with audiences around the world. With a B.A. in physics from Otterbein College and an M.S. in astronomy from Vanderbilt University, Mammana has held positions at the Smithsonian's National Air & Space Museum, the University of Arizona, and San Diego's Reuben H. Fleet Science Center. He now works as an astronomy writer, lecturer and photographer from under the clear dark skies of Southern California's Anza-Borrego Desert. Mammana is the author of six books on astronomy, hundreds of popular magazine and encyclopedia articles and, since 1992, has written "Stargazers," the only nationally syndicated weekly newspaper column on astronomy.

As an accomplished night-sky photographer, his stunning images have appeared in a variety of media and international exhibitions, and can be enjoyed at his website, www.dennismammana.com. He is an invited member of TWAN — The World At Night — an international team of the world's most highly acclaimed sky photographers.

A dynamic public speaker, Mammana has entertained and informed audiences on six continents at resorts, on cruise ships and as an after-dinner speaker, and leads public tours to view and photograph such celestial displays as the aurora borealis and total solar eclipses. He makes frequent appearances on both radio and television.

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From Minimoon to Supermoon Oct 10, 2019

Week of Oct. 13-19, 2019 Several times a year, we hear big news about the supermoon — when the full moon appears largest in our sky. Why, however, do we rarely hear about the full moon appearing at its smallest? Why doesn't this make the headli... Read More

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An 'All-Star' Baseball Game Oct 03, 2019

Week of Oct. 6-12, 2019 I remember as a kid sitting in the front room next to our small black and white Motorola television set as my dad introduced me to many of the comedy teams of his day. What a treat it was to share laughter with him over classi... Read More

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Journey from Andromeda Sep 26, 2019

Week of Sept. 29 - Oct. 5, 2019 A long time ago in a galaxy far, far away, a beam of light began its journey across the cosmos. At the remarkable speed of 186,282 miles per second, this beam could orbit our planet nearly 449 times in just one minute.... Read More

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The Smallest Constellations Sep 19, 2019

Week of Sept. 22-28, 2019 Not all constellations are created equally. Few things illustrate this better than facing east and then casting your gaze straight overhead this week after dark. There you'll spot the grand asterism known as the Summer Tria... Read More