Wedges of an orange generate enough current and electrical juice – 3.5 volts – to power an LED. The fruit’s citric acid helps electrons flow from galvanized nails to copper wire in this 14-hour exposure. This image was published in September’s Visions of Earth, a trio of photos that appear in each issue of National Geographic. (Photo by Caleb Charland/National Geographic)

“The Sloan Digital Sky Survey III (SDSS-III) has released the largest-ever three-dimensional map of massive galaxies and distant black holes, which will help astronomers explain the mysterious “dark matter” and “dark energy” that scientists know makes up 96 percent of the Universe”. – SDSS-III

“GoPro is a brand of the privately owned San Mateo, California company Woodman Labs that features “wearable” camera/camcorders such as helmet cameras that are targeted at adventure video/photography. Widely used by professionals and hobbyists”. – Wikipedia. Photo: “Skydiving fun in Miami by Ralph Turner. This is a shot I took yesterday at Skydive Miami during a fun jump with friend Dexter Marcelino”. (Photo by Ralph Turner)

A woman poses for a picture near an ice hole as a man takes a dip during celebrations of the Orthodox Christian feast of Epiphany in the settlement of Ivanovskoye in the Moscow region, Russia on January 19, 2022. (Photo by Maxim Shemetov/Reuters)

Leeds revellers didn't let the storms put a dampener on festivities on December 31, 2023. (Photo by Nb press ltd)

The Perth-based photographer and journalist Frances Andrijich has travelled the Western Australian coast since the early 90s, capturing clotheslines in all their glory. In her images they take the roles of play equipment, Christmas trees and, in the summer, a homemaker’s dream. Andrijich admits she is hopelessly hung up on clotheslines; her latest book celebrates them under the spotlight of the Australian sun. Here: Vera Germanis hangs out underwear in Frances Andrijich’s grandparents’ backyard. This was the photographer’s first clothesline shot, taken in Midland Junction in 1991. (Photo by Frances Andrijich)

A competitor tries to swipe away some grease as he slips off the “gostra”, a pole covered in grease, during the celebrations for the religious feast of St Julian, patron of the town of St Julian's, outside Valletta August 30, 2015. In the traditional “gostra”, a game stretching back to the Middle Ages, young men, women and children have to make their way to the top of a pole and try to uproot one of the flags to win prizes. Photo by Darrin Zammit Lupi/Reuters)

Galagos, more commonly known as bush babies, are tiny African primates with remarkable jumping abilities. Thanks to the elastic energy stored in the tendons of their lower legs, small-eared galagos can jump 6 feet straight up in the air. (Photo by Traer Scott/Chronicle Books)