#2 The inside of one of Google’s data centres.
#3 A lava lake at Erta Ale volcano, Ethiopia.
#4 An x-ray of a person’s spine before and after their treatment for scoliosis.
#5 The most detailed image of Mercury ever taken.
#6 Bagger 288, the largest excavator in the world.
#7 A cross section of an underwater communication cable.
#8 A town in Nördlingen, built inside the crater made by a meteorite which fell to Earth 14 million years ago.
#9 Two kilogrammes of fat looks compared to two kilogrammes of muscle.
#10 A huge dust storm, Western Australia, 2013.
#11 A watch that belongs to Akito Kawagoe. It stopped at 8:15 – Which was the exact time when the atomic bomb, Hiroshima, dropped in 1945.
#12 Eggs of an octopus.
#13 A full circle rainbow which was photographed from a plane.
#14 A true colour image of Mars which was taken from the Curiosity rover.
#15 People ascending Everest in unison on May 2013.
#16 Daytona Beach in Florida. The photograph was taken in 1957.
#17 A mountain of used tyres in bird’s-eye view.
#18 The aurora borealis, or commonly known as the northern lights, seen from space.