The "dark side of the moon" -- the side of the moon not visible from Earth -- can be seen in this image that was taken by a NASA camera on the Deep Space Climate Observatory satellite. See more amazing images from "The week in 37 photos."
NASA/NOAA
The art of the 'death match' —
Blood has always been a part of professional wrestling, but some small, independent promotions are taking it to the extreme these days. Marc McAndrews has been photographing some of their "death matches," where wrestlers attack each other with weapons such as barbed wire and fluorescent-light tubes. The athletes aren't seriously injuring one another -- but the blood and the scars are very much real.
Seventy years after the United States dropped an atomic bomb on Hiroshima, Japan, this toddler's tricycle stands as a bitter reminder of the horrors of nuclear warfare. The tricycle and other fascinating artifacts have been preserved by the Hiroshima Peace Memorial Museum.
Nobuo Tetsutani/Hiroshima Peace Memorial Museum
The men of the Paris Opera Ballet —
Ballerinas may get more of the press, but Matthew Brooke focused his lens on the men of the Paris Opera Ballet: "What incredible athletes and artists they are," he said.
Matthew Brookes/Damiani
'He looked straight into the camera!' —
British tourist George Benton and his girlfriend, Ella, snap a cheeky selfie with a monkey at the Ubud Monkey Forest in Bali, Indonesia, on Tuesday, August 4. See that and more in this week's selfie gallery.
George Benton/Splash News
What a shot! —
UFC champion Ronda Rousey, right, punches Bethe Correia during their bantamweight title fight Sunday, August 2, in Rio de Janeiro. Rousey knocked out Correia in 34 seconds, improving her record to 12-0. See more amazing sports photos from this week.
Buda Mendes/Zuffa LLC/Getty Images
National Geographic photo contest —
This year's National Geographic Traveler Photo Contest received more than 17,000 entries from photographers around the world. Grand-prize winner Anuar Patjane Floriuk will get an eight-day expedition to Costa Rica and the Panama Canal for this photo, "Whale Whisperers."
A firefighting air tanker flies in front of the setting sun while battling the Rocky Fire near California's Clear Lake on Saturday, August 1. California continues to battle fires as its historic drought reaches a fourth year.
Justin Sullivan/Getty Images
'Miracle Baby' thriving after fresh start —
In October 2010, a bus driver in New York found a toddler wandering in the streets alone at 4 in the morning. These photos follow the boy's life since that fateful day. They were taken by his stepmother, photographer Rocio De Alba, who wanted to understand what he was thinking as he adjusted to his new surroundings.
