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71428037 - Evening twilight on the beach at Skagsanden, Lofoten, Norway.

Venus in a close conjunction with dimmer Saturn in the evening twilight on January 22,2023. They were 22 arc minutes apart this evening. The 1-day-old waxing crescent Moon is below the planet pair deep in the twilight. The magnitude 2.8 star Deneb Algiedi,aka Delta Capricorni,is faintly visible below Venus. Venus was magnitude -3.9 while Saturn was magnitude 0.8.

13999716 - Venus in a close conjunction with dimmer Saturn in the evening twilight on January 22,2023. They were 22 arc minutes apart this evening. The 1-day-old waxing crescent Moon is below the planet pair deep in the twilight. The magnitude 2.8 star Deneb Algiedi,aka Delta Capricorni,is faintly visible below Venus. Venus was magnitude -3.9 while Saturn was magnitude 0.8.

Auroral curtains in the evening twilight on March 23,2023 during the great equinox show that night. This is looking west toward the sunset glow and with the Moon and Venus above the clouds lit yellow by light pollution from Calgary to the west from my location.

13998989 - Auroral curtains in the evening twilight on March 23,2023 during the great equinox show that night. This is looking west toward the sunset glow and with the Moon and Venus above the clouds lit yellow by light pollution from Calgary to the west from my location.

The conjunction of the waxing crescent Moon with Venus on June 21,2023,summer solstice evening,with the worlds in clouds in the deep blue twilight sky.

13998784 - The conjunction of the waxing crescent Moon with Venus on June 21,2023,summer solstice evening,with the worlds in clouds in the deep blue twilight sky.

A CPR freight train eastbound through the Canadian Rockies,in the evening twilight with bright Venus in the western sky over the peaks of the Continental Divide.

13998407 - A CPR freight train eastbound through the Canadian Rockies,in the evening twilight with bright Venus in the western sky over the peaks of the Continental Divide.

The line-up of three evening planets in the southwest twilight sky, on December 17, 2021 — with Jupiter at top left, Venus at bottom right, and dimmer Saturn in the middle, all defining the line of the ecliptic in the cold winter sky this night. The stars of Capricornus are at centre.

13899600 - The line-up of three evening planets in the southwest twilight sky, on December 17, 2021 — with Jupiter at top left, Venus at bottom right, and dimmer Saturn in the middle, all defining the line of the ecliptic in the cold winter sky this night. The stars of Capricornus are at centre.

Observing Venus in the evening twilight, at the Old Man on His Back Prairie and Heritage Conservation Area in southwest Saskatchewan, May 2015. Jupiter shines above at left. This is a single 30 second exposure at f/4.5 with the 24mm lens and Canon 6D at ISO 2500.

13899524 - Observing Venus in the evening twilight, at the Old Man on His Back Prairie and Heritage Conservation Area in southwest Saskatchewan, May 2015. Jupiter shines above at left. This is a single 30 second exposure at f/4.5 with the 24mm lens and Canon 6D at ISO 2500.

A superb and extensive display of noctilucent clouds at dawn on July 16, 2022, with the clouds reaching up to the zenith as the sky brightened. Capella is the star right of centre; Venus is rising at lower right. This is looking northeast to the dawn twilight.

13899467 - A superb and extensive display of noctilucent clouds at dawn on July 16, 2022, with the clouds reaching up to the zenith as the sky brightened. Capella is the star right of centre; Venus is rising at lower right. This is looking northeast to the dawn twilight.

The waxing crescent Moon over the skyline of Calgary on January 18, 2018. I shot this from Tom Campbell Park area looking southwest to the sunset twilight.

13899373 - The waxing crescent Moon over the skyline of Calgary on January 18, 2018. I shot this from Tom Campbell Park area looking southwest to the sunset twilight.

A panorama of Lake Edith in Jasper National Park, Alberta, on a calm autumn night, looking north to the stars of Ursa Major, the Great Bear, and the Big Dipper in deep twilight. Arcturus is at far left setting in the northwest over Pyramid Mountain, while Capella in Auriga and the stars of Perseus are rising at right in the northeast. This was on a mid-October night when the Big Dipper rides low in the northern sky from this latitude of 53° N.

13899054 - A panorama of Lake Edith in Jasper National Park, Alberta, on a calm autumn night, looking north to the stars of Ursa Major, the Great Bear, and the Big Dipper in deep twilight. Arcturus is at far left setting in the northwest over Pyramid Mountain, while Capella in Auriga and the stars of Perseus are rising at right in the northeast. This was on a mid-October night when the Big Dipper rides low in the northern sky from this latitude of 53° N.

A panorama of an arc of noctilucent clouds over a ripening field of yellow canola, on July 14, 2022 from southern Alberta near Hussar. This was about 11:20 pm MDT with the NLCs near their peak. They reached a little higher when they first appeared a few minutes earlier in the brighter sky, but capturing them is always a balance between getting them at their maximum height vs. the darkness of the sky background to make the fainter structures stand out. The foreground is illuminated mostly by twilight, and I have brightened it to bring out the canola colours and the colour contrast between earth

13898633 - A panorama of an arc of noctilucent clouds over a ripening field of yellow canola, on July 14, 2022 from southern Alberta near Hussar. This was about 11:20 pm MDT with the NLCs near their peak. They reached a little higher when they first appeared a few minutes earlier in the brighter sky, but capturing them is always a balance between getting them at their maximum height vs. the darkness of the sky background to make the fainter structures stand out. The foreground is illuminated mostly by twilight, and I have brightened it to bring out the canola colours and the colour contrast between earth

Mars, Venus and Jupiter (in that order from top to bottom) in a triangle, in conjunction, at an old farmstead near Vulcan, Alberta, in the morning twilight, October 28, 2015. Illumination is from the nearly Full Hunter’s Moon in the west. The trio of planets were in Leo in a fine conjunction not to be repeated until November 21, 2111. Almost all of Leo is visible here, with Regulus, the constellation’s brightest star, just to the right of the windmill blades at top.

13898071 - Mars, Venus and Jupiter (in that order from top to bottom) in a triangle, in conjunction, at an old farmstead near Vulcan, Alberta, in the morning twilight, October 28, 2015. Illumination is from the nearly Full Hunter’s Moon in the west. The trio of planets were in Leo in a fine conjunction not to be repeated until November 21, 2111. Almost all of Leo is visible here, with Regulus, the constellation’s brightest star, just to the right of the windmill blades at top.

71446169 - Twilight at Godafoss waterfall, Iceland

71428045 - Wintry twilight mood at the beach of Uttakleiv, Lofoten, Norway.

The planets Venus (brightest at centre) and Mars (upper left of Venus) in the late evening twilight over the Rocky Mountains and Bow River in Banff National Park. This was June 6,2023,from the Storm Mountain viewpoint on the Bow Valley Parkway north of Castle Junction. The stars Castor and Pollux in Gemini are at right. Mars is just to the left of the Beehive star cluster,M44,just showing up here.

13998619 - The planets Venus (brightest at centre) and Mars (upper left of Venus) in the late evening twilight over the Rocky Mountains and Bow River in Banff National Park. This was June 6,2023,from the Storm Mountain viewpoint on the Bow Valley Parkway north of Castle Junction. The stars Castor and Pollux in Gemini are at right. Mars is just to the left of the Beehive star cluster,M44,just showing up here.

A 360° panorama of the great equinox aurora of March 23,2023,with the aurora already bright as the sky darkened at twilight. The Kp values peaked at Kp7 this night.

13998615 - A 360° panorama of the great equinox aurora of March 23,2023,with the aurora already bright as the sky darkened at twilight. The Kp values peaked at Kp7 this night.

The planets Venus (brightest at centre) and Mars (upper left of Venus) in the moonlit and twilight sky over the front ranges of the Rocky Mountains. The stars Castor and Pollux in Gemini are above Venus. The star cluster Messier 44,the Beehive,in Cancer is to the left of Mars. This was May 27,2023,from the Sierra Cabins West property near Lundbreck,Alberta,shot during a workshop as part of the program for the Lightchasers Conference held in Pincher Creek,Alberta. Illumination is by moonlight and by a low-level lighting warm LED panel. The sky is blue with light from the waxing quarter Moon off

13998603 - The planets Venus (brightest at centre) and Mars (upper left of Venus) in the moonlit and twilight sky over the front ranges of the Rocky Mountains. The stars Castor and Pollux in Gemini are above Venus. The star cluster Messier 44,the Beehive,in Cancer is to the left of Mars. This was May 27,2023,from the Sierra Cabins West property near Lundbreck,Alberta,shot during a workshop as part of the program for the Lightchasers Conference held in Pincher Creek,Alberta. Illumination is by moonlight and by a low-level lighting warm LED panel. The sky is blue with light from the waxing quarter Moon off

The waxing crescent Moon two days after New low in a smoky sky setting over the Badlands of Dinosaur Provincial Park, Alberta, Canada. This was June 30, 2022. Despite the hazy skies, the twilight colours show up well in the sky. The glow of Earthshine shows up slightly on the night side of the Moon.

13900484 - The waxing crescent Moon two days after New low in a smoky sky setting over the Badlands of Dinosaur Provincial Park, Alberta, Canada. This was June 30, 2022. Despite the hazy skies, the twilight colours show up well in the sky. The glow of Earthshine shows up slightly on the night side of the Moon.

The 1910 Liberty Schoolhouse, a classic pioneer one-room school, on the Alberta prairie under the stars in the twilight of a spring night. Moonlight from the waxing Moon provides the illumination.

13900119 - The 1910 Liberty Schoolhouse, a classic pioneer one-room school, on the Alberta prairie under the stars in the twilight of a spring night. Moonlight from the waxing Moon provides the illumination.

The Milky Way over the side pond at Emerald Lake, Yoho National Park, BC., from the bridge to the Lodge. Lights from the Lodge illuminate the trees. Perpetual twilight near solstice (I shot this JUne 6, 2016) lights the sky deep blue. Saturn is the bright object in haze shining through the trees at right.

13900043 - The Milky Way over the side pond at Emerald Lake, Yoho National Park, BC., from the bridge to the Lodge. Lights from the Lodge illuminate the trees. Perpetual twilight near solstice (I shot this JUne 6, 2016) lights the sky deep blue. Saturn is the bright object in haze shining through the trees at right.

Circumpolar star trails at dawn over the historic Butala homestead at the Old Man on His Back Prairie and Heritage Conservation Area in southwest Saskatchewan, taken May 2015. This is a stack of 70 frames from a larger time-lapse sequence, from the start of the sequence in the dusk twilight, with some aurora active and adding green and magenta to the sky. Cassiopeia is at left over the house.

13899777 - Circumpolar star trails at dawn over the historic Butala homestead at the Old Man on His Back Prairie and Heritage Conservation Area in southwest Saskatchewan, taken May 2015. This is a stack of 70 frames from a larger time-lapse sequence, from the start of the sequence in the dusk twilight, with some aurora active and adding green and magenta to the sky. Cassiopeia is at left over the house.

Venus, as an evening star in the western twilight of a December night, over the old Pioneer grain elevators at Mossleigh, Alberta. Lighting is fro the sky and partly from nearby streetlights.

13899089 - Venus, as an evening star in the western twilight of a December night, over the old Pioneer grain elevators at Mossleigh, Alberta. Lighting is fro the sky and partly from nearby streetlights.

13899014 - Circumpolar star trails at dawn over the historic Butala homestead at the Old Man on His Back Prairie and Heritage Conservation Area in southwest Saskatchewan, taken May 2015. This is a stack of 70 frames from a larger time-lapse sequence, from the end of the sequence in the dawn twilight. Each exposure is 40 seconds with the 14mm lens at f/2.8 and Canon 60Da at ISO 1600. Stacked with Advanced Stacker Actions. The foreground comes from a stack of 8 of the final exposures, mean combined, to smooth noise.

The waxing crescent Moon setting over a nearby farm, on June 26, 2017. Shot at the start of a time-lapse sequence, and shot in haste from home as the Moon appeared from beneath an otherwise very cloudy sky. The dark side of the Moon is lit by Earthshine, prominent despite the Moon’s low altitude and bright twilight sky.

13898856 - The waxing crescent Moon setting over a nearby farm, on June 26, 2017. Shot at the start of a time-lapse sequence, and shot in haste from home as the Moon appeared from beneath an otherwise very cloudy sky. The dark side of the Moon is lit by Earthshine, prominent despite the Moon’s low altitude and bright twilight sky.

The rising "supermoon" of July 12, 2022 embedded in the blue arc of Earth's shadow, rimmed by the pink Belt of Venus band of twilight colours, all over the badlands formations of Dinosaur Provincial Park on the Red Deer River in Alberta, Canada. The blue band on the horizon is the shadow of the Earth cast onto the atmosphere opposite the sunset point. The pink Belt of Venus above the shadow is from red sunlight still illuminating the upper atmosphere, an effect that lasts only a few minutes at sunset or sunrise, and requires a very clear sky to show up, as it was this night.

13898804 - The rising "supermoon" of July 12, 2022 embedded in the blue arc of Earth's shadow, rimmed by the pink Belt of Venus band of twilight colours, all over the badlands formations of Dinosaur Provincial Park on the Red Deer River in Alberta, Canada. The blue band on the horizon is the shadow of the Earth cast onto the atmosphere opposite the sunset point. The pink Belt of Venus above the shadow is from red sunlight still illuminating the upper atmosphere, an effect that lasts only a few minutes at sunset or sunrise, and requires a very clear sky to show up, as it was this night.

Mars (bottom) and Saturn in conjunction at right, and the Milky Way at left, in deep blue twilight before the sky got filly dark, over the old corral of the 76 Ranch, in Grasslands National Park, Saskatchewan, August 27/28, 2014. Antares and Scorpius are just behind the corral gate at right, Sagittarius is at left in the Milky Way. M6 and M7 open cluster are visible at left.

13898781 - Mars (bottom) and Saturn in conjunction at right, and the Milky Way at left, in deep blue twilight before the sky got filly dark, over the old corral of the 76 Ranch, in Grasslands National Park, Saskatchewan, August 27/28, 2014. Antares and Scorpius are just behind the corral gate at right, Sagittarius is at left in the Milky Way. M6 and M7 open cluster are visible at left.

Comet NEOWISE (C/2020 F3) reflected in the still waters this night of Crawling Lake in southern Alberta. A dim aurora at right colours the sky magenta. Lingering twilight colours the sky blue. A meteor or more likely a flaring satellite appears at right and is also reflected in the water. Even in this short exposure, the two tails — dust and ion — are visible. This was July 20, 2020.

13898763 - Comet NEOWISE (C/2020 F3) reflected in the still waters this night of Crawling Lake in southern Alberta. A dim aurora at right colours the sky magenta. Lingering twilight colours the sky blue. A meteor or more likely a flaring satellite appears at right and is also reflected in the water. Even in this short exposure, the two tails — dust and ion — are visible. This was July 20, 2020.

The Smoky Cape Lighthouse with its beams in the cloudy evening twilight shining in the light rainfall. This is near South West Rocks on the Mid-North Coast of New South Wales, Australia. Built in 1891, the Lighthouse was staffed until the 1980s when all lighthouses were automated. It was converted from kerosene to electric in 1962 when it was also increased to 1,000,000 candela output. It uses a Chance Brothers 4-metre 9-panel 920m catadioptric lens.

13898439 - The Smoky Cape Lighthouse with its beams in the cloudy evening twilight shining in the light rainfall. This is near South West Rocks on the Mid-North Coast of New South Wales, Australia. Built in 1891, the Lighthouse was staffed until the 1980s when all lighthouses were automated. It was converted from kerosene to electric in 1962 when it was also increased to 1,000,000 candela output. It uses a Chance Brothers 4-metre 9-panel 920m catadioptric lens.

Auroral curtains in twilight on March 14, 2018 from at sea north of Tromsø, Norway, on the Hurtigruten ship the m/s Nordnorge, with the curtains showing a purple tinge to the background sky, likely from scattered blue sunlight mixing with the red oxygen colours.

13897902 - Auroral curtains in twilight on March 14, 2018 from at sea north of Tromsø, Norway, on the Hurtigruten ship the m/s Nordnorge, with the curtains showing a purple tinge to the background sky, likely from scattered blue sunlight mixing with the red oxygen colours.

The waxing 3-day-old Moon in twilight with Earthshine on the dark side of the Moon. Note the “Baily’s Beads” of bright peaks catching the morning sunlight around the lunar south pole.

13897529 - The waxing 3-day-old Moon in twilight with Earthshine on the dark side of the Moon. Note the “Baily’s Beads” of bright peaks catching the morning sunlight around the lunar south pole.

13887903 - Inside Red Bridge Over The Bow River At Twilight With Lights; Calgary Alberta Canada

13887902 - Red Bridge Over The Bow River At Twilight With Lights; Calgary Alberta Canada

13887901 - Red Bridge Over The Bow River At Twilight With Lights; Calgary Alberta Canada

13834674 - A baobab tree at twilight under a full moon. Botswana

13834673 - A baobab tree at twilight. Botswana

13812877 - Nashville Tennessee city skyline at twilight from the west side with traffic and skyscrapers

13812689 - USA, Oregon, Portland, Downtown Skyline at Twilight

13797029 - Czech Republic, Jicin. Twilight in the main square surrounded with recently restored historical buildings.

71446168 - Twilight at Godafoss waterfall, Iceland

71446136 - Twilight in Hallerbos, Belgium

71443840 - View over Lake Brienz with Mountain and Moon in Twilight in Bern Canton, Switzerland.

71428046 - Wintry twilight mood at the beach of Uttakleiv, Lofoten, Norway.

Venus below dimmer Saturn in the evening twilight on January 21,2023,the evening before their close conjuncton. The magnitude 2.8 star Deneb Algiedi,aka Delta Capricorni,is below and to the left of Venus. Venus was magnitude -3.9 while Saturn was magnitude 0.8.

13999522 - Venus below dimmer Saturn in the evening twilight on January 21,2023,the evening before their close conjuncton. The magnitude 2.8 star Deneb Algiedi,aka Delta Capricorni,is below and to the left of Venus. Venus was magnitude -3.9 while Saturn was magnitude 0.8.

Comet Nishimura (C/2023 P1),at left,captured about 30 minutes after rising in the pre-dawn sky on September 10,2023 with the sky bright with morning twilight colours. The comet was only about 4.5º above the horizon at this time.

13999038 - Comet Nishimura (C/2023 P1),at left,captured about 30 minutes after rising in the pre-dawn sky on September 10,2023 with the sky bright with morning twilight colours. The comet was only about 4.5º above the horizon at this time.

A colourful aurora in the deep blue of twilight on Febrary 26,2023 on a Kp6 storm night. From the Churchill Northern Studies Centre. The Big Dipper and Ursa Major are at upper centre. Leo is rising at right. The landscape is lit by the waxing quarter Moon.

13998767 - A colourful aurora in the deep blue of twilight on Febrary 26,2023 on a Kp6 storm night. From the Churchill Northern Studies Centre. The Big Dipper and Ursa Major are at upper centre. Leo is rising at right. The landscape is lit by the waxing quarter Moon.

Comet Nishimura (C/2023 P1),at left,captured just after rising in the pre-dawn sky on September 10,2023 with the sky beginning to brighten with morning twilight colours. The comet was only about 2º above the horizon at this time.

13998517 - Comet Nishimura (C/2023 P1),at left,captured just after rising in the pre-dawn sky on September 10,2023 with the sky beginning to brighten with morning twilight colours. The comet was only about 2º above the horizon at this time.

A scene of the crescent Moon with Earthshine,planets and the last of the winter stars in the evening twilight,with a thunderstorm and lightning bolts added for a bonus,over the prairie lake near home,the Crawling Valley Reservoir. This was May 22,2023.

13998461 - A scene of the crescent Moon with Earthshine,planets and the last of the winter stars in the evening twilight,with a thunderstorm and lightning bolts added for a bonus,over the prairie lake near home,the Crawling Valley Reservoir. This was May 22,2023.

Orion setting in deep twilight sky with stars in abundance but the sky still deep blue, from Australia with Orion “upside down.” The Saucepan asterism popular in Australia is visible here, made of the Belt stars, and stars in the Sword and the star to the left of the bottom star in the Belt here.

13900401 - Orion setting in deep twilight sky with stars in abundance but the sky still deep blue, from Australia with Orion “upside down.” The Saucepan asterism popular in Australia is visible here, made of the Belt stars, and stars in the Sword and the star to the left of the bottom star in the Belt here.

Summer solstice twilight and circumpolar star trails over the badlands of Dinosaur Provincial Park, Alberta. Some bright noctilucent clouds are visible low on the northern horizon. I shot this June 15, 2015 as part of a shoot for a “star trail” video tutorial, as an example image.

13899171 - Summer solstice twilight and circumpolar star trails over the badlands of Dinosaur Provincial Park, Alberta. Some bright noctilucent clouds are visible low on the northern horizon. I shot this June 15, 2015 as part of a shoot for a “star trail” video tutorial, as an example image.

The waxing crescent Moon in the twilight sky behind a windmill water pump at City of Rocks State Park, New Mexico, Christmas Eve, December 24, 2014. This is a high dynamic range HDR stack of 7 exposures at 2/3rds stop intervals with the Canon 6D and 24mm lens.

13899115 - The waxing crescent Moon in the twilight sky behind a windmill water pump at City of Rocks State Park, New Mexico, Christmas Eve, December 24, 2014. This is a high dynamic range HDR stack of 7 exposures at 2/3rds stop intervals with the Canon 6D and 24mm lens.

Orion and the winter sky with Venus, setting into the western twilight, over Turret Arch in Arches National Park, Utah, on April 6, 2015. Venus is the bright object at right under the Pleaides. Sirius is the bright star at left, with Procyon the bright star ar top left.

13899070 - Orion and the winter sky with Venus, setting into the western twilight, over Turret Arch in Arches National Park, Utah, on April 6, 2015. Venus is the bright object at right under the Pleaides. Sirius is the bright star at left, with Procyon the bright star ar top left.

Evening twilight with Venus in the sky, on December 3, 2013 from Massai Point, Chiricahua National Monument, Arizona. This is a 8-frame HDR High Dynamic Range stack to compress the high contrast from the bright sky and dark foreground into one image. Combined with Photomatix Pro. Taken with the Canon 5D MkIi and Rokinon 14mm manual lens at f/8. Some wind has blurred trees. From images _MG_7042 to 7049, taken at 2/3rd stop increments.

13898845 - Evening twilight with Venus in the sky, on December 3, 2013 from Massai Point, Chiricahua National Monument, Arizona. This is a 8-frame HDR High Dynamic Range stack to compress the high contrast from the bright sky and dark foreground into one image. Combined with Photomatix Pro. Taken with the Canon 5D MkIi and Rokinon 14mm manual lens at f/8. Some wind has blurred trees. From images _MG_7042 to 7049, taken at 2/3rd stop increments.

The two-day-old waxing crescent Moon with Earthshine, above Mercury at right, then 4 days past its greatest elongation from the Sun, in the evening sky of May 2, 2022. The star Aldebaran is at left, and below Mercury to the right is the Pleiades, just visible in the twilight and thin clouds.

13898842 - The two-day-old waxing crescent Moon with Earthshine, above Mercury at right, then 4 days past its greatest elongation from the Sun, in the evening sky of May 2, 2022. The star Aldebaran is at left, and below Mercury to the right is the Pleiades, just visible in the twilight and thin clouds.

The quarter Moon reflected in the waters of Reesor Lake, Alberta in Cypress Hills Interprovincial Park. Taken on July 5, 2014. This is with the 14mm Rokinon lens and Canon 6D at ISO800. This is a high dynamic range stack of 6 exposures from 1/15 to 0.6 seconds taken just before using the camera to take a motion control time-lapse. The Moon was in conjunction with Mars (right of Moon) and Spica (left of Moon) but in the bright twilight they are not showing up here.

13898528 - The quarter Moon reflected in the waters of Reesor Lake, Alberta in Cypress Hills Interprovincial Park. Taken on July 5, 2014. This is with the 14mm Rokinon lens and Canon 6D at ISO800. This is a high dynamic range stack of 6 exposures from 1/15 to 0.6 seconds taken just before using the camera to take a motion control time-lapse. The Moon was in conjunction with Mars (right of Moon) and Spica (left of Moon) but in the bright twilight they are not showing up here.

13898526 - The rising "supermoon" of July 12, 2022 embedded in the blue arc of Earth's shadow, rimmed by the pink Belt of Venus band of twilight colours, all over the badlands formations of Dinosaur Provincial Park on the Red Deer River in Alberta, Canada. The blue arc is the shadow of the Earth cast onto the atmosphere opposite the sunset point. The pink Belt of Venus is from red sunlight still illuminating the upper atmosphere, an effect that lasts only a few minutes at sunset or sunrise, and requires a very clear sky to show up, as it was this night.

The morning sky of January 11, 2018, with the waning crescent Moon shining above the pairing of Mars (left) and Jupiter (right). The Moon and planets are in Libra just east (left) of the star Zubenelgenubi, or Alpha Librae. Left of centre, Antares and the stars of Scorpius are just rising in the dawn twilight.

13898520 - The morning sky of January 11, 2018, with the waning crescent Moon shining above the pairing of Mars (left) and Jupiter (right). The Moon and planets are in Libra just east (left) of the star Zubenelgenubi, or Alpha Librae. Left of centre, Antares and the stars of Scorpius are just rising in the dawn twilight.

A panorama of roughly 120° showing a star- and planet-filled sky in the dawn twilight over Lake Annette in Jasper National Park, Alberta, on the morning of October 25, 2015.

13898378 - A panorama of roughly 120° showing a star- and planet-filled sky in the dawn twilight over Lake Annette in Jasper National Park, Alberta, on the morning of October 25, 2015.

A 150° panorama of an arc of diffuse aurora to the northeast, and above the glow of solstice twilight to the north at centre, while the urban sky glow from Calgary lights the sky at left to the west, as well as an odd band of cloud that persisted all evening across the north.

13898300 - A 150° panorama of an arc of diffuse aurora to the northeast, and above the glow of solstice twilight to the north at centre, while the urban sky glow from Calgary lights the sky at left to the west, as well as an odd band of cloud that persisted all evening across the north.

A busy morning sky, with the waning crescent Moon shining above the pairing of Mars (left) and Jupiter (right), with the Space Station also streaking by below in four exposures. The Moon and planets are in Libra. Left of centre, Antares and the stars of Scorpius are just rising in the dawn twilight.

13898086 - A busy morning sky, with the waning crescent Moon shining above the pairing of Mars (left) and Jupiter (right), with the Space Station also streaking by below in four exposures. The Moon and planets are in Libra. Left of centre, Antares and the stars of Scorpius are just rising in the dawn twilight.

Sunset twilight colours and the waxing gibbous Moon over the Chiricahua Mountains in southeast Arizona, south of Willcox. Taken December 15, 2013 on Highway 186. Taken with the 24mm lens and Canon 5D MkII. Some dark crepuscular rays are visible converging to the anti-solar point.

13898005 - Sunset twilight colours and the waxing gibbous Moon over the Chiricahua Mountains in southeast Arizona, south of Willcox. Taken December 15, 2013 on Highway 186. Taken with the 24mm lens and Canon 5D MkII. Some dark crepuscular rays are visible converging to the anti-solar point.

This is the line-up of planets across the southwestern sky on December 6, 2021, consisting of (L to R): Jupiter, Saturn and Venus, with the 2.5-day-old waxing crescent Moon in conjunction below Venus. The Moon had eclipsed the Sun two days before on December 4, when it was on the ecliptic. Two days later it was below the ecliptic line. Jupiter and Saturn are in Capricornus, with its stars all visible here in the evening twilight. The three planets are nicely equally spaced. Such an array makes the ecliptic line visible.

13897791 - This is the line-up of planets across the southwestern sky on December 6, 2021, consisting of (L to R): Jupiter, Saturn and Venus, with the 2.5-day-old waxing crescent Moon in conjunction below Venus. The Moon had eclipsed the Sun two days before on December 4, when it was on the ecliptic. Two days later it was below the ecliptic line. Jupiter and Saturn are in Capricornus, with its stars all visible here in the evening twilight. The three planets are nicely equally spaced. Such an array makes the ecliptic line visible.

A line-up across the southwestern sky on December 5, 2021, consisting of (L to R): Jupiter, Saturn and Venus (brightest), with Jupiter and Saturn in Capricornus, with its stars all visible here though dim in the twilight. The three planets are nicely equally spaced here. Such an array makes the ecliptic line visible.

13897703 - A line-up across the southwestern sky on December 5, 2021, consisting of (L to R): Jupiter, Saturn and Venus (brightest), with Jupiter and Saturn in Capricornus, with its stars all visible here though dim in the twilight. The three planets are nicely equally spaced here. Such an array makes the ecliptic line visible.

The Fitz Roy Massif in pastel pre-dawn morning twilight. Los Glaciares National Park near El Chalten, Argentina. A UNESCO World Heritage Site in the Patagonia region of South America. Mount Fitz Roy is in the tallest peak in the center. The creek in the foreground is the Arroyo del Salto.

13847288 - The Fitz Roy Massif in pastel pre-dawn morning twilight. Los Glaciares National Park near El Chalten, Argentina. A UNESCO World Heritage Site in the Patagonia region of South America. Mount Fitz Roy is in the tallest peak in the center. The creek in the foreground is the Arroyo del Salto.

13834672 - A baobab tree at twilight. Botswana

13797557 - Twilight over the buildings along the Grand Canal with Santa Maria della Salute, Venice, Veneto, Italy

13797555 - Twilight over the Rialto Bridge and the Grand Canal, Venice, Veneto, Italy

13795973 - Singapore. Street-level overview of city at twilight.

13795699 - Hong Kong, China. Night skyline with new Ferris Wheel and twilight in city at harbor and Hong Kong Observation Wheel in purple

13776698 - Birdcage, an art installation in Kings Cross at twilight; London, England

13885915 - George Washington Bridge over the Hudson River at twilight; New Jersey, United States of America

Hilltop sentry on the look out, a guanaco (Lama guanicoe) standing guard overlooking the landscape and watching for predators against a blue sky at twilight; Torres del Paine National Park, Patagonia, Chile

13885297 - Hilltop sentry on the look out, a guanaco (Lama guanicoe) standing guard overlooking the landscape and watching for predators against a blue sky at twilight; Torres del Paine National Park, Patagonia, Chile

Sentry on the look out, a guanaco (Lama guanicoe) standing guard overlooking the landscape and watching for predators at twilight; Torres del Paine National Park, Patagonia, Chile

13885295 - Sentry on the look out, a guanaco (Lama guanicoe) standing guard overlooking the landscape and watching for predators at twilight; Torres del Paine National Park, Patagonia, Chile

13882641 - Colorado river rushing over stones at twilight.

13882445 - Silhouetted white rhinoceros at water's edge at twilight.

13774367 - Manhattan Skyline At Twilight, Liberty State Park; Jersey City, New Jersey, United States Of America

Aerial view of mist over the river and forest at twilight in the Inambari District of the Tambopata Province; Inambari, Tambopata, Madre de Dios, Peru

13885256 - Aerial view of mist over the river and forest at twilight in the Inambari District of the Tambopata Province; Inambari, Tambopata, Madre de Dios, Peru

13885228 - Paragliding over mountaintops at twilight near Honolulu; Oahu, Hawaii, United States of America

View of boats moored in the harbor at twilight along the coastal seaside village of Teignmouth at the mouth of the River Teign; Teignmouth, Devon, England, Great Britain

13885105 - View of boats moored in the harbor at twilight along the coastal seaside village of Teignmouth at the mouth of the River Teign; Teignmouth, Devon, England, Great Britain

Boats moored in the harbor at twilight along the coastal seaside village of Shaldon at the mouth of the River Teign; Shaldon, Devon, England, Great Britain

13885104 - Boats moored in the harbor at twilight along the coastal seaside village of Shaldon at the mouth of the River Teign; Shaldon, Devon, England, Great Britain

13881679 - Dilapidated stone buildings with painted, blue wooden doors next to the shore with mountains on the horizon at twilight

13774356 - Manhattan Skyline At Twilight, Liberty State Park; Jersey City, New Jersey, United States Of America

13773135 - Queensboro (59th Street) Bridge At Twilight; Queens, New York, United States Of America

13773134 - Queensboro (59th Street) Bridge At Twilight; Queens, New York, United States Of America

13771680 - Verrazano-Narrows Bridge At Twilight; Brooklyn, New York, United States Of America

Aerial view of the rivers and forested landscape of the Tambopata Reserve in the Amazon Basin of southeast Peru at twilight; Puerto Maldonado, Madre de Dios, Peru

13885231 - Aerial view of the rivers and forested landscape of the Tambopata Reserve in the Amazon Basin of southeast Peru at twilight; Puerto Maldonado, Madre de Dios, Peru

13885136 - Silhouette of the Yangtze Bridge, crossing the River Yangtze, lit up at twilight; Nanjing, Jiangsu Province, China

View of the City of Venice with the Campanile di San Marco, across the Grand Canal (Canal Grande) from the Punta della Dogana a la Salute in Veneto at twilight; Venice, Italy

13884808 - View of the City of Venice with the Campanile di San Marco, across the Grand Canal (Canal Grande) from the Punta della Dogana a la Salute in Veneto at twilight; Venice, Italy

13882065 - Silhouette of large rock formation and coastline of Diamond Beach at twilight, Nusa Penida, Bali, Indonesia; Nusa Penida, Bali, Indonesia

13882027 - Twilight at the London Eye along the River Thames at sunset in London, England.

13774365 - United Nations At Twilight; New York City, New York, United States Of America

13885246 - View of St Mark's Campanile and Doge's Palace in Piazza San Marco at twilight; Veneto, Venice, Italy

13882459 - Sonoran desert at twilight with saguaro cacti and crescent moon.

13882066 - Silhouette of large rock formation and coastline of Diamond Beach at twilight, Nusa Penida, Bali, Indonesia; Nusa Penida, Bali, Indonesia

13885296 - Hilltop sentry on the look out, a guanaco (Lama guanicoe) standing guard overlooking the landscape and watching for predators against a blue sky at twilight; Torres del Paine National Park, Patagonia, Chile

A person walks along the shoreline of the Northern Coast of Iceland with summer, wild flowers sunlit at twilight in the foreground; Husavik, Iceland

13884979 - A person walks along the shoreline of the Northern Coast of Iceland with summer, wild flowers sunlit at twilight in the foreground; Husavik, Iceland

13884382 - Silhouette of water lilies at twilight; Pink Water Lilies Lake, Udon Thani, Thailand

Overview of the city skyline of Cape Town from Signal Hill at twilight with silhouette of Table Mountain to the side; Cape Town, Western Cape Province, South Africa

13883904 - Overview of the city skyline of Cape Town from Signal Hill at twilight with silhouette of Table Mountain to the side; Cape Town, Western Cape Province, South Africa

Polar Bear (Ursus maritimus) on iceberg in a Melting World, ice cap, Northeastland at twilight, National Geographic Explorer; Svalbard Archipeligo, Norway

13882657 - Polar Bear (Ursus maritimus) on iceberg in a Melting World, ice cap, Northeastland at twilight, National Geographic Explorer; Svalbard Archipeligo, Norway

13882110 - Silhouette of large rock formation and coastline of Diamond Beach at twilight, Nusa Penida, Bali, Indonesia; Nusa Penida, Bali, Indonesia