The main room at the Cave of El Castillo in Cantabria, Spain, showing hand prints and depictions of animals. Photo courtesy Gabinete de Prensa del Gobierno de Cantabria
Become a Friend of Aeon to save articles and enjoy other exclusive benefits
Make a donationThe main room at the Cave of El Castillo in Cantabria, Spain, showing hand prints and depictions of animals. Photo courtesy Gabinete de Prensa del Gobierno de Cantabria
Detail of Sunrise III (1936-37), by Arthur Garfield Dove. Gift of Katherine S Dreier to the Collection Société Anonyme/Yale University Art Gallery
Colourised photographs taken using the schlieren technique depict for the first time the shockwaves of two supersonic jets, typically heard on the ground as the sonic boom. Photo courtesy NASA
A firefighter battling the King Fire in Fresh Pond, California, on 17 September 2014. Photo by Noah Berger/Reuters
In the Kakuma Refugee Camp, Kenya, in 2012. Photo by Olivia Arthur/Magnum
Photo by HG/Magnum
Photo by Ralph Lee Hopkins/National Geographic
A Parasaurolophus dinosaur by Rich Penney. Courtesy the artist
Potential impacter? A single frame Rosetta navigation camera image of Comet 67P taken on 15 April 2015 from a distance of 162 km. The crescent phase has been rendered in false colours. Photo courtesy ESA/Rosetta/NAVCAM.
From the Robert Kennedy funeral train, USA, 1968. Photo by Paul Fusco/Magnum
Photo by Cultura/Gallery Stock
Dinosaur collectors Pete (l) and Neal Larson (c) of the Black Hills Institute prepare the skeleton of Sue, the Tyrannosaurus Rex now on show at the Field Museum, Chicago. Photo by Louie Psihoyos/Corbis
What if light slowed down? Illustration by Matt Murphy/Handsome Frank
The Tollund Man, Denmark. Photo by Christian Kober.Corbis