Triathletes swim during an Ironman event in Taupō, New Zealand, on Saturday, March 1, 2025. (Photo by Phil Walter/Getty Images)

Madison Chock and Evan Bates of the United States skate during the Ice Dance, Free Dance program of the 2025 ISU World Figure Skating Championships at TD Garden in Boston, Massachusetts, on March 29, 2025. (Photo by Geoff Robins/AFP Photo)

Vietnamese troops march during a parade celebrating the 80th anniversary of independence in Hanoi, Vietnam Tuesday, September 2, 2025. (Photo by Vincent Thian/AP Photo)

Dancers in mirrorball costumes dance with festival-goers during day two of Glastonbury Festival 2024 at Worthy Farm, Pilton on June 27, 2024 in Glastonbury, England. Founded by Michael Eavis in 1970, Glastonbury Festival features around 3,000 performances across over 80 stages. Renowned for its vibrant atmosphere and iconic Pyramid Stage, the festival offers a diverse lineup of music and arts, embodying a spirit of community, creativity, and environmental consciousness. (Photo by Leon Neal/Getty Images)

The Royal Observatory just announced its Astronomy Photographer Of The Year 2013 winners. Australian photographer Mark Gee was chosen among a thousand amateur and professional photographers around the globe to win the top title. His work is part of an exhibition of the winning photographers, which opened on Sept. 19 at the Royal Observatory Greenwich. The Royal Observatory shared with us the winners and notable mentions of the competition. Their descriptions of the prizewinners can be found below the images.

(L-R) Singers Kristal Lyndriette, Ashley Williams, Shyann Roberts, Brienna DeVlugt and Gabby Carreiro of June's Diary attend the 2016 BET Awards at the Microsoft Theater on June 26, 2016 in Los Angeles, California. (Photo by Frederick M. Brown/Getty Images)

Fire over Vieira de Leiria, Portugal, on October 16, 2017 as a series of deadly wildfires broke out across Spain and Portugal as the approach of Hurricane Ophelia whipped up strong winds that fanned the flames. (Photo by Helio Madeiras/News Pictures)

In this September 9, 2018 photo, a diver holds onto his catch of lobsters during a fishing journey in the Miskito coast near Cay Savannah, Honduras. A diver makes 75 lempiras ($3) per pound of lobster. An average 10-pound daily haul of lobster is a windfall for people in one of the most impoverished regions of the Americas, so many take the risk, and many suffer for it. (Photo by Rodrigo Abd/AP Photo)