Mount Sinabung volcano erupts, as seen from Tiga Pancur village, Karo Regency in Indonesia's North Sumatra province, in this October 8, 2014 file photo. (Photo by Y. T. Haryono/Reuters)

A robot using artificial intelligence is displayed at a stand during the International Telecommunication Union (ITU) AI for Good Global Summit in Geneva, on May 30, 2024. Humanity is in a race against time to harness the colossal emerging power of artificial intelligence for the good of all, while averting dire risks, a top UN official said. (Photo by Fabrice Coffrini/AFP Photo)

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.

In this Friday, February 6, 2015 photo, sandhill cranes begin to stir after resting for the night at a roosting location along their winter migration route in Cecilia, Ky. According to counts made by biologists with the Kentucky Fish and Wildlife Resources, about 12,000 of the birds have stopped in Cecilia this week during their winter northward migration on their way to their nesting grounds in the Great Lakes region. (Photo by David Stephenson/AP Photo)

British Prime Minister Rishi Sunak is greeted by Italian Prime Minister Giorgia Meloni during a welcome ceremony on day one of the 50th G7 summit at Borgo Egnazia on June 13, 2024 in Fasano, Italy. The G7 summit in Puglia, hosted by Italian Prime Minister Giorgia Meloni, the seventh held in Italy, gathers leaders from the seven member states, the EU Council, and the EU Commission. (Photo by Christopher Furlong/Getty Images)

American singer-songwriter and rapper Janelle Monáe at Richie Akiva's 10th Annual “The After” Met Gala After Party held at Casa Cipriani on May 6, 2024 in New York, New York. (Photo by Daniel Zuchnik/WWD via Getty Images)