Tui De Roy / Volcan Alcedo Giant Tortoise (Chelonoidis nigra vandenburghi) group wallowing in mud at night, Alcedo Volcano, Isabela Island, Galapagos Islands, Ecuador

Tui De Roy / Volcan Alcedo Giant Tortoise (Chelonoidis nigra vandenburghi) group wallowing in mud at night, Alcedo Volcano, Isabela Island, Galapagos Islands, Ecuador

Luciano Candisani / Jacare Caiman (Caiman yacare) group in wetland at night, Pantanal, Brazil

Tim Fitzharris / Startrails over Shiprock in four corners region, New Mexico

Jim Brandenburg / Giant Sequoia (Sequoiadendron giganteum) and star trails in King's Canyon National Park, California

Tui De Roy / Tungurahua Volcano erupting, near Banos, Andes Mountains, Ecuador

Tui De Roy / Volcan Alcedo Giant Tortoise (Chelonoidis nigra vandenburghi) trio wallowing at night, Alcedo Volcano, Isabela Island, Galapagos Islands, Ecuador

Konrad Wothe / Star tracks at night, Sinai, Egypt

Vincent Grafhorst / Baobab (Adansonia sp) tree and star trails, Kubu Island, Makgadikgadi Pan, Botswana, Botswana

Vincent Grafhorst / Quiver Tree (Aloe dichotoma) and star trails, Keetmanshoop, Namibia

Vincent Grafhorst / Quiver Tree (Aloe dichotoma) group and star trails, Keetmanshoop, Namibia, stacked image*

Theo Allofs / Star trails above red sand dune at night, Dorob National Park, Namib Desert, Namibia

Konrad Wothe / Animal tracks in snow near Penzberg, Bavaria, Germany

Andy Rouse / African Lion (Panthera leo) 'Notch', star of Disney's African Cats, by track in grass. Masai Mara, Kenya, Africa.

Jim Brandenburg / North star in night exposure on Christmas Eve, Minnesota

Matthias Breiter / Star trails over temperate rainforest, Petersburg, Alaska

Matthias Breiter / Aurora borealis over Devil's Thumb, Petersburg, Alaska

Vincent Grafhorst / Camelthorn Acacia (Acacia erioloba) at night, Kgalagadi Transfrontier Park, Botswana

Piotr Naskrecki / Modjadji Cycad (Encephalartos transvenosus) after sunset, Modjadji Cycad Reserve, Limpopo, South Africa

Michael Quinton / Northern Red-backed Vole (Clethrionomys rutilus) in abandoned northern flicker tree cavity with star tracks in background, Slana, Alaska

Mark Jones / Mt Ruapehu time exposure shows lava bomb traces and lightning in swirling ash plume from 1996 eruption, Tongariro National Park, New Zealand

Steven David Miller / Male Spotted side / Zebra finch {Poephila guttata} Coward Springs Oodnatta Track, Australia

Harley Betts / Star trails around the south celestial pole over Mt Taranaki, also known as Mt Egmont (8,261 feet) a dormant volcano in the southwest corner of the North Island near the Tasman Sea, Egmont National Pa...

Michael & Patricia Fogden / Stars including Alpha Beta, Centauri and the Southern Cross, Spitzkop, Damaraland, Namibia

Michael & Patricia Fogden / Stars including Alpha Beta, Centauri and the Southern Cross, Spitzkop, Damaraland, Namibia

Michael & Patricia Fogden / Stars including Alpha Beta, Centauri and the Southern Cross, Spitzkop, Damaraland, Namibia

Konrad Wothe / Star trails, Serengeti National Park, Tanzania, east Africa

Harley Betts / Star trails around the south celestial pole in the evening sky over the Pouakai Range, Egmont National Park, New Zealand

Harley Betts / Star trails around the south celestial pole in the evening sky over the Pouakai Range, Egmont National Park, New Zealand

Harley Betts / Star trails around the south celestial pole over Mt Taranaki, also known as Mt Egmont (8,261 feet) a dormant volcano in the southwest corner of the North Island near the Tasman Sea, Egmont National Pa...

Harley Betts / Star trails around the south celestial pole over Mt Taranaki, also known as Mt Egmont (8,261 feet) a dormant volcano in the southwest corner of the North Island near the Tasman Sea, Egmont National Pa...

Jim Brandenburg / Pinnacles and star trails, South Dakota

Jim Brandenburg / Giant Sequoia (Sequoiadendron giganteum) and star trails in King's Canyon National Park, California

Mitsuhiko Imamori / Christmas Tree Firefly (Pyrophanes appendiculata) group and star trails at night, southeast Asia

Duncan Usher / English Oak (Quercus robur) and winter star trails, Sababurg Primeval Forest, Hessen, Germany

Duncan Usher / Star trails in winter above country road, Germany

Sebastian Kennerknecht / Light trails from airplanes and boats with star trails at night, Mount Tamalpais State Park, California

Matthias Breiter / Star trails over rainforest trees, Tongass National Forest, Petersburg, Alaska

Yva Momatiuk & John Eastcott / Gum Tree (Eucalyptus sp) at night, Western Australia, Australia

Yva Momatiuk & John Eastcott / Mount Denali in autumn night sky with star trails, Denali National Park, Alaska

Konrad Wothe / Star tracks over desert, Namibia

Solvin Zankl / Track through arable field containing Common poppies (Papaver rhoeas) and Cornflowers (Centaurea cyanus). Bamberg, Germany. June.

Theo Allofs / Quiver Tree (Aloe dichotoma) group at night, Namibia

Theo Allofs / Baobab (Adansonia sp) trees at night, Nxai Pan National Park, Botswana

Theo Allofs / Trichocereus Poco (Echinopsis tarijensis) cacti in desert at night, Salar de Uyuni, Bolivia

Konrad Wothe / Mountains at night with star trails, Kampenwand Mountain, Alps, Upper Bavaria, Germany

Christian Ziegler / Balsa Tree (Ochroma lagopus) flowers at night, Barro Colorado Island, Panama

Fabrice Cahez / Brittlestar (Ophiura ophiura) washed up on sand beach, Bay of Somme, France, February.

Fabrice Cahez / Brittlestar (Ophiura ophiura) washed up on sand beach, Bay of Somme, France, February.