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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Planets Among the Stars Sep 30, 2025

Week of October 5-11, 2025 I recall as a child lying on the grass at night, gazing up at the stars, and wondering if any of those distant suns had planets orbiting nearby. I was not the first to do so, of course. The question had been pondered by oth... Read More

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The Eastern Sky After Dark Sep 23, 2025

Week of September 28 - October 4, 2025 One of my favorite times of year has arrived. The sweltering heat is behind us, and I can get out more frequently to explore our beautiful desert, as well as enjoy the beginning of the college and NFL football s... Read More

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A Unique Return of Saturn Sep 16, 2025

Week of September 21-27, 2025 We've been many months without a bright planet in the night sky, but that's all about to change! On the night of Sunday, Sept. 21, the ringed planet Saturn officially returns to the evening sky, and all planet watchers w... Read More

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A Celestial Trio to Greet the Dawn Sep 09, 2025

Week of September 14-20, 2025 Early risers have probably been marveling at the dazzling white "star" now appearing in the eastern sky at dawn. It is, of course, the brilliant planet Venus. But this week it will team up with a couple of other celestia... Read More