Paramasivan points to the statue of sun god Surya at a temple outside the Kodaikanal Solar Observatory, India, February 5, 2017. In the early morning darkness, Devendran P. walks up a hill to a solar observatory in India's southern hill town of Kodaikanal, trudging the same path his father and grandfather walked in a century-old family tradition of studying the sun. (Photo by Danish Siddiqui/Reuters)

A line of soldiers firing handguns during a training session, circa 1920. (Photo by Keystone). P.S. All pictures are presented in high resolution.

Ukraine's Ruslana performs her song Wild Dance ands wins the Eurovision Song Contest on May 15, 2004 at the Abdi Ipekci Stadium, in Istanbul, Turkey. The event – hosted by last year's winners Turkey – also celebrates the 30th Anniversary of ABBA's win. (Photo by Christopher Furlong/Getty Images)

A U.S. Marine leads training on a shooting range in France in an undated photo taken during the First World War. (Photo by Reuters/Courtesy Library of Congress)

A dog is seen at the entrance of a house in the flooded residential area of Villeneuve-Saint-Georges, near Paris, France January 26, 2018. The Paris region has been deeply affected by the floods that hit the country over the past week, but in Paris, it was business as usual. (Photo by Christian Hartmann/Reuters)

Revellers shield themselves as they celebrate in the rain near Stonehenge stone circle, despite official Summer Solstice celebrations being cancelled due to the spread of the coronavirus disease (COVID-19), near Amesbury, Britain, June 21, 2020. (Photo by Toby Melville/Reuters)

A girl dives under a wave at Bondi Beach as temperatures reached 29 degrees celsius on December 17, 2020 in Sydney, Australia. The Bureau of Meteorology predicted the arrival of thunderstorms and showers later today with a southerly change bringing possible severe storms around the Sydney region. (Photo by Mark Evans/Getty Images)

Scarlett Zelaya, 10, of Woodbridge, VA cools off under a water mister while visiting the Smithsonian National Zoological Park on Wednesday July 21, 2021 in Washington, DC. (Photo by Matt McClain/The Washington Post)