Two women kiss each other during a flashmob on the ocassion of the International Day Against Homophobia, Transphobia and Biphobia in Pamplona, Navarra, Spain, 17 May 2017. The International Day Against Homophobia, Transphobia and Biphobia is held every year on 17 May. (Photo by Villar Lopez/EPA/EFE)

Keeper Silvia Salvatierra, 59, is kissed by a chimp named “Jony”, 54, who was rescued from a circus, at the Lujan Zoo from where felines, including tigers and lions, will be transferred to a wildlife sanctuary in India, in Lujan, on the outskirts of Buenos Aires, Argentina on April 8, 2024. (Photo by Agustin Marcarian/Reuters)

A woman plays around as she walks across a glass-bottomed suspension bridge in a scenic zone in Pingjiang county in southern China's Hunan province Thursday, September 24, 2015. The bridge, 300 meters (984 feet) long and 180 meters (590 feet), opened to visitors on Thursday for the first time since its conversion from a regular suspension bridge was completed. (Photo by Chinatopix Via AP Photo)

Soap Bubble Structures by Kym Cox. Bubbles optimise space and minimise their surface area for a given volume of air. This phenomenon makes them a useful tool in many areas of research, in particular, materials science and “packing” – how things fit together. Bubble walls drain under gravity, thin at the top, thick at the bottom, which interferes with travelling lightwaves to create bands of colour. Black spots show the wall is too thin for interference colours, indicating the bubble is about to burst. (Photo by Kym Cox/2019 Science Photographer of the Year/RPS)

Gunfire was brought to the steps of President Truman's Washington home, Blair House, as two assassins tried to kill the chief executive, November 1, 1950. One of the gunmen, Oscar Collazzo of New York, lay wounded at the bottom of Blair House's front steps after the president's police guard had finished their work, at the cost of one guards' life, Dec. 9, 1950. The second gunman was killed. (Photo by Harvey Georges/AP Photo)

British designer Alex Chinneck created the installation - called From the Knees of my Nose to the Belly of my Toes - by removing the facade of a detached four-storey house that had been derelict for eleven years and replacing it with a brand new frontage that leaves the crumbling top storey exposed, then curves outwards so the bottom section lies flat in front of the house.

NASA handout photographs from the various Apollo missions are shown in this combination photograph. The photographs are some of more than 12,000 from NASA's archives recently aggregated on the Project Apollo Archive Flickr account. (Top L) David R. Scott, command module pilot, stands in the open hatch of the Command Module during the Apollo 9 mission March 6, 1969. (Top centre) Edwin "Buzz" Aldrin Jr.walks on the surface of the moon during the Apollo 11 mission July 20, 1969. (Top R) Neil Armstrong, Apollo 11 commander, is pictured inside the Lunar Module during the Apollo 11 mission July 20, 1969. (Bottom L) Alan Bean holds a container filled with lunar soil collected during the Apollo 12 mission November 19, 1969. (Bottom centre) Scientist-astronaut Harrison Schmitt rides in the Lunar Roving Vehicle during the Apollo 17 mission December 13, 1972. (Bottom R) Harrison Schmitt stands next to a huge, split boulder during the Apollo 17 mission December 13, 1972. (Photo by Reuters/NASA)

A quirky cartoonist challenged his own creation to a fight – but he could only draw. US artist Alex Solis, 31, from Chicago, Illinois, drew his skull t-shirt-wearing alter ego, who he calls Chuck, smashing his phone and stabbing his finger in his Inkteraction pictures. But Alex got his own back with a punch to Chucks jaw before squashing him against the bottom of the page. The ink man tried to get under Chucks skin to win the fight by stretching and pulling the cartoons face as the drawings became more bloody. (Photo by Alex Solis/Caters News)