The graffiti against the war in Ukraine of the street artist ChemiS in Prague, Czech Republic, March 19, 2022. (Photo by Amos Chapple/Radio Free Europe/Radio Liberty)

Snowfall views in Ercis district of Van, Turkiye on January 14, 2022. (Photo by Necmettin Karaca/Anadolu Agency via Getty Images)

A woman in a Cholita dress poses for photos, at the Uyuni Salt Flat in Bolivia on March 26, 2022. (Photo by Claudia Morales/Reuters)

An orange oakleaf rests on a plant at the Taipei Zoo on November 26, 2020. (Photo by Sam Yeh/AFP Photo)

A woman steers her stand-up paddle board using an umbrella as a sail at Ladoga lake near the city of Olonets, 300 kilometers (186 miles) north-east of St. Petersburg, Russia, Friday, July 22, 2022. (Photo by Dmitri Lovetsky/AP Photo)

A small flock of birds seems to be giving an escort to an airliner on final approach to Reagan Washington National Airport in Arlington, Virginia on January 12, 2022. The scene took place over Gravelly Point which is an area within the National Park Service's George Washington Memorial Parkway. (Photo by Michael S. Williamson/The Washington Post)

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.

Katjinga, a Rhodesian ridgeback dog who lives on a 20-acre farm in Germany, adopted an abandoned pot-bellied piglet in August 2009. The tiny black piglet, named Paulinchen, had been so small at birth that her mother likely overlooked it. Katjinga's owner, Roland Adam, found the piglet alone and cold and brought it to his 8-year-old dog. (Photo by Fame Pictures)