Stomping ground
Greg du Toit’s image was the grand title winner of the 2013 Wildlife Photographer of the Year competition, run by the Natural History Museum and BBC Worldwide.

Ring cycle
Nasa released this stunning portrait of Saturn created made by amateur image processor Gordan Ugarkovic piecing together images from the Cassini spacecraft.

Under cover
The downtown and Lions Gate Bridge enveloped in morning fog in Vancouver, British Columbia.

Man alive!
"The Incredible Bionic Man", the first working bionic man made of prosthetic parts and artificial organs, at the Smithsonian National Air and Space Museum, Washington.

Into the void
A plane takes off as smoke and ash from wildfires burning across the state of New South Wales blanket the sky over Sydney Harbour

Test drive
The European Space Agency’s test rover completed its five-day exploration across and under Chile’s Atacama Desert to see how it may fare on Mars.

Letting off steam
The snow-covered Popocatepetl volcano spews a cloud of steam high into the air, as seen from Chalco, on the outskirts of Mexico City.

Aid programme
Specially-sized hearing aid mouldings wait to be fitted by the Starkey Foundation at Lesotho Cooperative College.

Limber up
The Sea Life Sydney Aquarium's Great Barrier Reef Oceanarium has begun a series of yoga classes.