What a moment! These viral photos defined Rio 2016

Updated 1426 GMT (2226 HKT) August 17, 2016
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South Korean gymnast Lee Eun-ju takes a selfie with North Korean gymnast Hong Un-jong during training on Thursday, August 4. Relations have been frosty between the North and South since its division following the end of World War II, but geopolitics were put to the side as the two Olympians came together. DYLAN MARTINEZ/REUTERS/Newscom
Abbey D'Agostino of the United States leaves the track on a wheelchair after twisting her ankle in the 5000-meter semifinal on Tuesday, August 16. D'Agostino and New Zealand's Nikki Hamblin, right, collided during the race but helped each other up and managed to make it to the finish line. OLIVIER MORIN/AFP/Getty Images
Shaunae Miller of the Bahamas dives over the finish line to win gold in the 400 meters on Monday, August 15. She edged out American Allyson Felix by .07 seconds. Matt Slocum/AP
David Katoatau of Kiribati dances during the 105-kilogram (231-pound) weightlifting final on Monday, August 15. He finished sixth overall. Tom Pennington/Getty Images
China's Qin Kai proposes to fellow diver He Zi after she received silver in the 3-meter springboard on Sunday, August 14. CHRISTOPHE SIMON/AFP/Getty Images
Jamaican sprinter Usain Bolt looks back at his competitors during a 100-meter semifinal on Sunday, August 14. Bolt won the final a short time later, becoming the first man in history to win the 100 meters at three straight Olympic Games. Cameron Spencer/Getty Images
South Africa's Chad Le Clos, right, looks over at U.S. swimmer Michael Phelps during the 200-meter butterfly final on Tuesday, August 9. Ahead of their semifinal, the two were seen on camera as Le Clos shadowboxed while Phelps just watched. Adam Pretty/Getty Images
The diving pool, right, is seen on Tuesday, August 9. The pool had turned from blue to green since Monday.
Adam Pretty/Getty Images
Rugby player Isadora Cerullo of Brazil, left, kisses Marjorie Enya, a volunteer at the Games, on Monday, August 8. Enya proposed to Cerullo after the rugby sevens match between Australia and New Zealand. Alexander Hassenstein/Getty Images South America/Getty Images
U.S. fencer Ibtihaj Muhammad celebrates after defeating Ukraine's Olena Kravatska in the individual sabre competition on Monday, August 8. Muhammad is the first U.S. Olympian to compete in hijab. Patrick Smith/Getty Images
A cell phone falls out of the pocket of French fencer Enzo Lefort as he competes against Germany's Peter Joppich on Sunday, August 7. KIRILL KUDRYAVTSEV/AFP/Getty Images
U.S swimmer Michael Phelps competes in the 4x100-meter freestyle relay on Sunday, August 7. The red marks on his body are the result of cupping -- an ancient therapy that has mostly been used in Middle Eastern and Asian countries, especially China. Ryan Pierse/Getty Images
U.S. swimmer Lilly King reacts after winning the 100-meter breaststroke semifinal on Sunday, August 7. King beat Russia's Yulia Efimova in both their semifinal and final faceoff after what had been billed as an Olympic grudge race. GABRIEL BOUYS/AFP/Getty Images
Yusra Mardini, a swimmer for the Refugee Olympic team, competes in a 100-meter butterfly heat on Saturday, August 6. The Syrian native and her teammates have had a remarkable journey to the Games. Michael Sohn/AP
Silver medalist Yang Sun of China and gold medalist Mack Horton of Australia shake hands after the 400-meter swimming freestyle on Saturday, August 6. The Australian had opened up a war of words against his Chinese opponent in the buildup to the final, saying: "I don't have time or respect for drug cheats." Clive Rose/Getty Images South America/Getty Images
Samir Ait Said of France receives medical attention after breaking his leg on the vault during the artistic gymnastics team qualification round on Saturday, August 6. Scott Halleran/Getty Images
Fireworks explode over the Maracana Stadium in Rio de Janiero at the end of the Olympic Games' opening ceremony on Friday, August 5. Francois-Xavier Marit/AFP/Getty images