Guy Edwardes / Aurora borealis above sea stacks, Reykjanes Peninsula, Iceland. 2019.

Stefan Christmann / Emperor penguin (Aptenodytes forsteri) colony huddled together under the Southern Lights, Aurora australis, Atka Bay, Antarctica. September.

Jack Dykinga / Aurora Borealis reflected in Polar Lake, conifers silhouetted at edge. Near Great Slave Lake, Northwest Territories, Canada. September 2018.

Jack Dykinga / Aurora Borealis display above conifers and Polar Lake. Near Great Slave Lake, Northwest Territories, Canada. September 2018.

Jack Dykinga / Aurora Borealis reflected in Polar Lake, wetland and conifers silhouetted along shore. Near Great Slave Lake, Northwest Territories, Canada. September 2018.

Guy Edwardes / Aurora Borealis over Sycamore Gap, Hadrian's Wall, Northumberland, England. February 2014

Guy Edwardes / Northern Lights over Vestrahorn, Hofn, Iceland. September 2017

Gavin Hellier / Timelapse of the Aurora Borealis over a fjord, Troms, Norway, March 2016. Hellier

Michio Hoshino / Aurora borealis over forest, Alaska

Terry Whittaker / Timelapse of the Aurora Borealis, Hornstrandir, West Fjords, Iceland. April 2016

SCOTLAND: The Big Picture / Scots pine (Pinus sylvestris) with Northern lights / Aurora borealis lighting up the night sky in background, Monadhliath Mountains, Cairngorms National Park, Scotland, UK, October 2015.

Sergey Gorshkov / Aurora borealis over river, Putoransky State Nature Reserve, Putorana Plateau, Siberia, Russia

Sergey Gorshkov / Aurora borealis over valley, Putorana Plateau, Siberia, Russia

Matthias Breiter / Aurora borealis above taiga, Whitehorse, Yukon Territory, Canada

Matthias Breiter / Aurora borealis above taiga, Whitehorse, Yukon Territory, Canada

Matthias Breiter / Aurora borealis above coast, Hudson Bay, Manitoba, Canada

Espen Bergersen / Northern lights / Aurora borealis over the Otertind peaks, Troms, Norway, October 2014.

Edwin Giesbers / Golden lion tamarin (Leontopithecus rosalia) captive, occurs in the Atlantic Rainforest of Brazil. Critically endangered.

Hiroya Minakuchi / Northern lights, Lofoten Islands, Norway

Hiroya Minakuchi / Northern lights, Lofoten Islands, Norway

Dave Watts / Golden lion tamarin (Leontopithecus rosalia rosalia) captive in zoo. Occurs in Brazil.

Sven Zacek / Cross-country skiier on a moonlit night admiring the Northern Lights (Aurora borealis), Norway, March 2013.

Peter Cairns / Northern lights (Aurora borealis) over Skagsanden beach, Flakstadoya, Lofoten, Norway. March 2015.

Ole Jorgen Liodden / Man resting by tree with small fire, with Northern Lights in the sky above, Valdres, Norway, January 2005.

Orsolya Haarberg / Northern lights above the pine forest, Gjenvollhytta, Klaebu. Sor-Trondelag, Norway. March 2013.

Steven Kazlowski / Photographer in front of Northern lights / Aurora borealis glowing brightly over the frozen eastern Beaufort Sea, Arctic National Wildlife Refuge, Alaska Model released.

Floris van Breugel / Aurora borealis / Northern Lights seen from entrance to tent, Brooks Range, Gates of the Arctic National Park, Alaska, USA, September 2014.

Floris van Breugel / Aurora Borealis over yellow tent lit from within and mountainous scenery, Arrigetch Peaks, Gates of the Arctic National Park, Brooks Range, Alaska, USA, August 2014.

Nick Garbutt / Scarlet Ibis (Eudocimus ruber) flying into roost sight at dusk, Hato La Aurora Reserve, Los Llanos, Colombia, South America.

David Noton / Aurora Borealis (Northern Lights) over the Klondike River, Yukon Territories, Canada, September 2013.

Ross Hoddinott / The Northern Lights / Aurora Borealis over a river, Vik, Iceland. February 2014.

Steven Kazlowski / Northern lights (Aurora borealis) glowing brightly over trees along Steese Highway, Cleary Point, outside Fairbanks, Alaska

Jussi Murtosaari / Northern Lights over forest, central Finland, March 2013

Orsolya Haarberg,Orsolya Haarbe / The Northern lights (Aurora borealis) viewed from Moskenes, Lofoten, Nordland, Norway, March 2006

Orsolya Haarberg,Orsolya Haarberg / The Northern lights (Aurora borealis) viewed from Moskenes, Lofoten, Nordland, Norway, March 2006

Ben Hall,Ben Hall / Aurora Borealis display over mountains at night, West Icelend, January 2013

Steven Kazlowski / Green Aurora borealis over the Beaufort Sea, seen from the 1002 area of the Arctic National Wildlife Refuge, North Slope of the Brooks Range, Alaska, October 2011

Juan Carlos Munoz / Northern lights / Aurora borealis over snowy landscape, Iceland, Europe, March 2012

Juan Carlos Munoz / Northern lights / Aurora borealis, Iceland, Europe, March 2012

Erlend Haarberg / Steam vents at night with northern lights, Hverir, Namafjall, Iceland, February 2011

Orsolya Haarberg / Steam vents with northern lights at night, Hverir, Namafjall, Iceland, February 2011

Erlend Haarberg / Northern lights over Mount Kirkjufell, Snaefellsnes, Iceland, September 2010

Erlend Haarberg / Small waterfall near Mount Kirkjufell with aurora borealis in the night sky, Snaefellsnes, Iceland, September 2010

Erlend Haarberg / Subglacial volcanic eruption under the Eyjafjallajokull ice cap with northern lights above the ash plume at night, Iceland, April 2010

Erlend Haarberg / Northern light above Ellenvatn Lake, Ovre-Pasvik National Park, Varanger, Finnmark, Norway, February 2007

Charlie Summers / The transit of Venus across the face of the sun, with visible sunspots, as seen from Aurora, Colorado, USA, 19.51 local time, 5 June 2012.

Roy Mangersnes / Aurora Borealis above the Arctic Ocean off the northen coast of Finnmark, Norway, April

Sven Zacek / Northern lights far on the horizon in night landscape. Sarek National Park, Sweden, Europe, September.

Lassi Rautiainen / Northern lights in moonlit sky, northern Finland, March 2009

Lassi Rautiainen / Beginnings of the Northern lights in night sky in winter with conifer trees laden with snow, Kuusamo, northern Finland, February 2009

Juan Carlos Munoz / Northern lights (Aurora Borealis) and moon in sky above Jokulsarlon glacier lagoon. Southern Iceland, Europe, March 2011.

Juan Carlos Munoz / Northern lights (Aurora Borealis) and moon in sky above Jokulsarlon glacier lagoon. Southern Iceland, Europe, March 2011.

Charlie Summers / An orbital presentation of the eclipse of the moon as seen from Aurora, Colorado, USA, on the evening of December 20, 2010 and the early morning of December 21, 2010. Composite

Bryan and Cherry Alexander / Northern lights (Aurora borealis) over a Nenets herders' camp. Yamal Peninsula, Western Siberia, Russia, 2001.

Bryan and Cherry Alexander / Northern lights (Aurora borealis) over a Nenets herders' camp. Yamal Peninsula, Western Siberia, Russia, 2001

Bryan and Cherry Alexander / Northern lights (Aurora borealis) over a Nenets herders' camp. Yamal Peninsula, Western Siberia, Russia, 2001.

Steven Kazlowski / Northern lights (Aurora borealis) across the night sky, over the Beaufort Sea, off shore from the 1002 area of the Arctic National Wildlife Refuge, Alaska September 2009

Steven Kazlowski / Northern lights (Aurora borealis) across the night sky as the late summer midnight sun travels eastward, over the Beaufort Sea, off shore from the 1002 area of the Arctic National Wildlife Refuge, Ala...

Michael Durham / Red-legged Frog (Rana aurora) near Circle Creek along coast, Oregon

Wild Wonders of Europe / Zacek / Northern lights, in snow covered forest, Riisitunturi National Park, Finland, February 2009 WWE BOOK. WWE INDOOR EXHIBITION. Exclusive Japanese calendar rights for 2014

Wild Wonders of Europe / Zacek / Northern lights, in snow covered forest, Riisitunturi National Park, Finland, February 2009

Wild Wonders of Europe / Zacek / Northern lights over snow covered forest, Riisitunturi National Park, Finland, February 2009

Eric Baccega / Northern lights (Aurora borealis) Northwest territories, March 2008, Canada

Eric Baccega / Northern lights (Aurora borealis) Northwest territories, March 2008, Canada

Eric Baccega / Northern lights (Aurora borealis) Northwest territories, March 2008, Canada

Eric Baccega / Northern lights (Aurora borealis) Northwest territories, March 2008, Canada

Eric Baccega / Igloo lit up at night under northern lights (Aurora borealis) Northwest Territories, Canada March 2007

Eric Baccega / Igloo under northern lights, Northwest Territories, Canada March 2007

Matthias Breiter / Northern lights or aurora borealis over illuminated tent, boreal forest, North America

Matthias Breiter / Northern lights or aurora borealis over boreal forest, North America

Matthias Breiter / Northern lights or aurora borealis over illuminated tent, boreal forest, North America

Jim Brandenburg / Aurora borealis, Northwoods, Minnesota

Michio Hoshino / Aurora borealis over forest, Alaska

Michio Hoshino / Illuminated tent beneath snow-covered mountains and Aurora borealis, Alaska

Michio Hoshino / Aurora borealis showing the North Star and Big Dipper, Alaska

Michio Hoshino / Aurora borealis over forest, Alaska

Michio Hoshino / Aurora borealis showing the North Star and Big Dipper, Alaska

Jorma Luhta / Aurora borealis colours in night sky, northern Finland, March

Jorma Luhta / Cross country skier and aurora borealis colours in night sky, northern Finland, winter

Jorma Luhta / Moving belt of aurora borealis colours in night sky. Lapland, northern Finland, winter

Jorma Luhta / Aurora borealis colours in midnight sky, northern Finland, April

Jorma Luhta / Aurora borealis corona colours in night sky, Lapland, northern Finland, winter

Jorma Luhta / Aurora borealis colours in night sky showing corona, northern Finland, winter

Jorma Luhta / Aurora borealis bow prior to storm. Northern Finland, winter 2002

Jorma Luhta / Aurora borealis bow indicating approaching borealis storm. Northern Finland, winter 2002

Jorma Luhta / Aurora borealis storm colours in night sky, northern Finland, winter

Jorma Luhta / Aurora borealis storm colours in night sky, northern Finland, February 2002, winter

Jorma Luhta / Aurora borealis colours in night sky, northern Finland, winter

Jorma Luhta / Aurora borealis colours in night sky over lake, northern Finland

Jorma Luhta / Aurora borealis colours in night sky over lake, northern Finland (nr Arctic circle), October 2002. Auroras also occur in the southern hemisphere where they are know as Aurora australis.

Jorma Luhta / Aurora borealis colours in night sky over lake, northern Finland, October 2002

Jorma Luhta / Aurora borealis colours in night sky, northern Finland, winter

Jorma Luhta / Aurora borealis lights in night sky and full moon. Northern Finland, January, winter 2002

Jorma Luhta / Person watching Aurora borealis colours in night sky, northern Finland, winter

Jorma Luhta / Aurora borealis colours, moon and Jupiter in night sky, northern Finland, winter 2002

Jorma Luhta / Aurora borealis bow in moonlit night sky, northern Finland, January, winter 2002