Welcome!
Upcoming Events…
Bringing the universe down to Earth…
Dennis L Mammana
Astronomer
For nearly five decades, I’ve been privileged to share the wonder and mystery of the universe with audiences around the world―through my public lectures and workshops, my popular astronomy writings, celestial photography, unique night sky tours and my exciting astronomy enrichment travel programs to some of the most exotic locations on our planet. I hope you enjoy exploring my website, and that you will follow and chat with me online!
Bringing the universe down to Earth…  Dennis L Mammana Astronomer
Sunday, November 12, 2023 RAIN OF FIRE Public lecture at Springs at Borrego Borrego Springs, CA
Sunday, December 17, 2023 BORREGO AFTER DARK: A PHOTOGRAPHIC JOURNEY Public lecture at Springs at Borrego Borrego Springs, CA
Sunday, January 14 2024 2024: A YEAR OF CELESTIAL WONDER Public lecture at Springs at Borrego Borrego Springs, CA
Sunday, February 04, 2024 THE GREAT AMERICAN TOTAL SOLAR ECLIPSE Public lecture at Springs at Borrego Borrego Springs, CA
Sunday, March 17, 2024 GREATEST LIGHT SHOW ON EARTH Public lecture at Springs at Borrego Borrego Springs, CA
Feb. 28 - March 06, 2024 ALASKA AURORA ADVENTURE Astronomical enrichment tour Fairbanks, AK
April 04-10, 2024 MEXICO TOTAL SOLAR ECLIPSE Astronomical enrichment tour Mazatlán, Sinaloa, Mexico
Friday, February 23, 2024 BORREGO AFTER DARK Public lecture at Astronomical Society of the Desert Palm Desert, CA
Saturday, November 18, 2023 CELESTIAL OVERNIGHT Campout at California Overland Borrego Springs, CA
© 2023 Dennis L Mammana.  All rights reserved.
Dec. 22, 2023 - Jan. 05, 2024 REGENT CRUISES Astronomical enrichment lectures Singapore to Sydney, Australia
Total solar eclipse Exploring starry skies Amazing northern lights
Saturday, November 11, 2023 SKY TOUR AT NIGHTFALL Public lecture at Nightfall Star Party Borrego Springs, CA
Dec. 17, 2024 - Jan. 04, 2025 SILVERSEA CRUISE LINE Astronomical enrichment lectures Ft. Lauderdale, FL to Los Angeles CA
Moonrise over San Diego Bay
Aug. 06-13, 2024 CRYSTAL CRUISES Astronomical enrichment lectures Anchorage, AK to Vancouver, BC
Aug. 13-21, 2024 CRYSTAL CRUISES Astronomical enrichment lectures Vancouver to Alaska to Vancouver