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TWAN _ The World at Night

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The World at Night (TWAN) @YBeletsky's photo is featuring today as #APOD in #NASA. 📷: Geminid Meteors over Chile Explanation: Are meteors streaming out from a point in the sky? Yes, in a way. When the Earth crosses a stream of Sun-orbiting meteors, these meteors appear to come from the direction of the stream -- with the directional point called the radiant. An example occurs every mid-December for the Geminids meteor shower, as apparent in thefeatured image. Recorded near the shower's peak in 2013, the featured skyscape captures Gemini's shooting stars in a four-hour composite from the dark skies of the Las Campanas Observatory in Chile. In the foreground the 2.5-meter du Pont Telescope is visible as well as the 1-meter SWOPE telescope. The skies beyond the meteors are highlighted by Jupiter, seen as the bright spot near the image center, the central band of our Milky Way Galaxy, seen vertically on the image left, and the pinkish Orion Nebula on the far left. Dust swept up from the orbit ofactive asteroid 3200 Phaethon, Gemini's meteors enter the atmosphere traveling at about 22 kilometers per second. The 2019 Geminid meteor shower peaks again this coming weekend. . © twanight.org/Beletsky #Yuri_Beletsky #twanight at Chile

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The World at Night (TWAN) @Amir.Ho.Abolfath's photo is featuring today as #APOD in #NASA. 📷: Pleiades to Hyades Explanation: This cosmic vista stretches almost 20 degrees from top to bottom, across the dusty constellation Taurus. It begins at the Pleiades and ends at the Hyades, two star clusters recognized since antiquity in Earth's night sky. At top, the compact Pleiades star cluster is about 400 light-years away. The lovely grouping of young cluster stars shine through dusty clouds that scatter blue starlight. At bottom, the V-shaped Hyades cluster looks more spread out in comparison and lies much closer, 150 light-years away. The Hyades cluster stars seem anchored by bright Aldebaran, a red giant star with a yellowish appearance. But Aldebaran actually lies only 65 light-years distant and just by chance along the line of sight to the Hyades cluster. Faint and darkly obscuring dust clouds found near the edge of the Taurus Molecular Cloud are also evident throughout the celestial scene. The wide field of view includes the dark nebula Barnard 22 at left with youthful star T Tauri and Hind's variable nebula just above Aldebaran in the frame. . © twanight.org/Abolfath #Amir_H_Abolfath #twanight at Iran

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The World at Night (TWAN) 📷: Margon Waterfall at Night Photo by #TWAN_Guest: @MohammadSadeghHayati From the photographer: Milky Way band above the Margon waterfall, Fars province, Iran on January 2019. Technical details: 55 shot Panorama, nikkor 24mm, f2.8, 20sec, Nikon D750 . 🌐 twanight.org/Guest #twanight at Iran

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The World at Night (TWAN) A startrail of 4 hours in Massif, France with Moonlight and autumn colors on October 2019. A star trail is a type of photograph that uses long exposure times to capture the apparent motion of stars in the night sky due to Earth's rotation. . © @Stephane.Vetter, twanight.org/Vetter #twanight at France

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The World at Night (TWAN) Sky of Sweden in the past few days. Photos by @NightSkyPhotographer 1st📷: Nacreous clouds in Stockholm Kind of rare, Nacreous clouds in Stockholm. 2nd📷: beautiful dusk with the moon and planets in the sky of Vallentuna. A crescent moon with three planets. I could only see Venus and Saturn, you can hardly see Venus low in the sky to the right. 3rd📷: Winter landscape outside my house, camera pointed towards north and polaris. 4th📷: Orion rising a cold winter night. . © twanight.org/Heden #P_M_Heden #twanight at Sweden

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The World at Night (TWAN) From @BabakTafreshi: A quick look inside The World at Night book, available almost globally: ⁣babaktafreshi.com/book ⁣ ⁣Search the title or my name on online stores or visit a nearby major bookstore. In the past one year I worked extensively with our publisher @quarto.knows to write this and select the images, to release the most striking collection of 200 nightscape photos, back stories, and in-depth information. Thank you all who purchase this, review it online, and share the story of The World at Night program twanight.org @twanight, on reconnecting people with the night sky and preserving the natural night environment. ⁣ ⁣The first 4 foreign editions are German, French, Japanese, and Chinese. Our international team of photographers in 20 countries include: @oshindzakarian @yuribeletsky @amir.ho.abolfath @bcstartrail @juan_carlos_casado @alxcherney @miguel_claro @amazingskyguy @jeffdaiphoto @alexconu @tahaghouchkanlu @christoph_malin @reiseziel_sterne @vulerulum @luc_perrot @nightskyphotographer @laurent_laveder @los_cielos_de_america @night_sky_photos @ytakasaka @takeishingo @stephane.vetter and more not on IG. . #twanight

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The World at Night (TWAN) 📷: Crescent of Silence Photo by #TWAN_Guest: @Mohamed_Laaifat_Photographe Crescent moon in blue sky of Merville-Franceville Beach, Normandy, France. 🌐 twanight.org/Guest #twanight at Normandy, France

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The World at Night (TWAN) @JeffDaiPhoto is #TWAN_photographer of this month, November 2019. Dedicated nightscape photographer who spends most of his imaging nights in Tibet. 🌐 twanight.org/Dai The youngest TWAN member, Dai Jianfeng (alias as #Jeff_Dai), was born in China's "foggy city" Chongqing in 1988. Jeff was not fascinated with the night sky until in 2011, during a mystical starry camping night on a mountain place which completely changed his life. He started to learn how to take TWAN-style photos and share them with people. Jeff was an automotive engineer who worked day-to-day and took night sky images almost all over China in the every clear weekends. Soon, Jeff's photos were published not only in China's major medias such as CCTV and China Daily, but also in international sources such as BBC, NBC, NASA and National Geographic. Little by little, Jeff's passion for astronomy endowed him with a mission to capture more unexplored night scenes. In 2015 he quit his day job and became a full-time astrophotographer. Very soon, he went to Tibet and Nepal for capturing the Himalayas at night. His Himalayan passion, however, got himself into quite a few big troubles from time to time, as he disregarded safety and hiked with heavy photographic equipment for hours, fell into the freezing river, fought with ferocious wild dogs and got lost in the wilderness at night. But Jeff realized pristine night sky does not exist only in those remote and risky places but some are still preserved near small communities. To preserve the remaining natural skies in his home country, Jeff is an active member of International Dark-sky Association (@idadarksky) Beijing. . #twanight

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The World at Night (TWAN) 📷: Conjunction of Venus & Jupiter on Nov 24, 2019. @Juan_Carlos_Casado's photo is featuring as #APOD of Nov 26, 2019 in #NASA. Explanation: What are those two bright objects on the horizon? Venus and Jupiter. The two brightest planets in the night skypassed very close together -- angularly -- just two days ago. In real space, they were just about as far apart as usual, since Jupiter (on the right) orbits the Sun around seven times farther out than Venus. The planetary duowere captured together two days ago in a picturesque sunset sky from Llers, Catalonia, Spain between a tree and the astrophotographer's daughter. These two planets will continue to stand out in the evening sky, toward the west, for the next few days, with a sliver of a crescent Moon and a fainter Saturn also visible nearby. As November ends, Jupiter will sink lower into the sunset horizon with each subsequent night, while Venus will rise higher. The next Jupiter-Venus conjunction will occur in early 2021. . © twanight.org/Casado #Juan_Carlos_Casado #twanight at Spain

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The World at Night (TWAN) 🎬: Light In The Night From @Stephane.Vetter: This is some of the timelapses I shot in Iceland from october 2011 to september 2013. More than six trips to take more than 100,000 pictures on the way. 📎Shot with Nikon cameras and lenses. Post-processed with CaptureNX2, Adobe Photoshop CC, QuickTime Pro and FinalCut Pro X. . 🎶©Music: 'Summon The Sky' by Aurah aurah.com . © twanight.org/Vetter #Stephane_Vetter #twanight at Iceland

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The World at Night (TWAN) 📷: Transit of Mercury from Providence, Rhode Island on November 11, 2019. From @BabakTafreshi: A rare celestial sight happened yesterday on 2019 Nov 11 beyond the visual limit of our eyes. The tiny disc of Mercury (the dot above the statue’s shoulder) traversed the solar disk during a 5.5-hour transit. Mercury’s diameter is about the width of continental US, ~ 40% of the Earth, and 285 times less than the sun diameter! Swipe to see a timelapse video and earlier view of the transit “first contact” through parting clouds. ⁣ ⁣The plan was to photograph this in Boston but overcast sky sent me and colleague astrophotographer Bruce Berger to the city of Providence where the Independent Man bronze statue crowning the Rhode Island State House was framed in this super telephoto capture, safely done by a solar filter on the lens. Thanks to folks @sigmaphoto who sent me 500mm f4 lens and 2x converter, used with @canonusa #EOSRa astro-camera and tested with #sigmafp new “pocketable” full-frame camera. ⁣ ⁣The next Transit of Mercury happens in Nov 2032. . © twanight.org/Tafreshi #Babak_Tafreshi #twanight at Providence, Rhode Island

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The World at Night (TWAN) Transit of Mercury from historic center of Marrakech on November 11, 2019. _© @Juan_Carlos_Casado, twanight.org/Casado #twanight at Marrakech

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The World at Night (TWAN) 📷: Transit of Mercury from southern Alberta, Canada on November 11, 2019. From @amazingskyguy: Mercury in transit on the disk of the Sun, at 11:01 am MST on November 11, 2019, only 3 minutes before egress. I shot from home in southern Alberta on a beautfully clear morning but with temperature a chilly -20° C at sunrise and warming to -12° by end of transit. This was the last transit of Mercury until 2032, but the last visible from North America until 2049! I shot this with the cropped frame Canon 60Da camera on the Astro-Physics 105mm Traveler refractor with a 2X Barlow for an effective focal length of 1200mm at f/12. This was 1/500 second at ISO 100 through a metal-coated Thousand Oaks solar filter yielding the yellow tint. . © #Alan_Dyer, twanight.org/Dyer #twanight at Alberta, Canada

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The World at Night (TWAN) 📷: Transit of Mercury and Sunset over Lake Uluabat near Eskikaraağaç, Turkey on November 11, 2019. © @vulerulum, twanight.org/Tezel #twanight at Eskikaraağaç, Bursa, Turkey

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The World at Night (TWAN) 📷: Transit of Mercury from Tehran, Iran on November 11, 2019. 📎Technical details: Lens: Wiliam optic FLT 110 f/7 telescope. Camera: Canon EOS 6D . © @EhsanMinagar & @TahaGhouchkanlu, twanight.org/Taha #twanight at Tehran, Iran

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The World at Night (TWAN) 📷: Transit of Mercury and green flash sunset from Tehran, Iran on November 11, 2019. Photos by @Amir.ho.Abolfath Technical details: Vixen VC200L at F45. Canon EOS5D MKII _📎A #transit_of_Mercury across the Sun takes place when the planet Mercury passes directly (transits) between the Sun and a superior planet, becoming visible against (and hence obscuring a small portion of) the solar disk. During a transit, Mercury appears as a tiny black dot moving across the disk of the Sun. _📎The #green_flash and green ray are meteorological optical phenomena that sometimes occur transiently around the moment of sunset or sunrise. When the conditions are right, a distinct green spot is briefly visible above the upper rim of the Sun's disk. . © twanight.org/Abolfath #Amir_H_Abolfath #twanight at Tehran, Iran

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The World at Night (TWAN) 📷: Constellations Above Himalayas on November 2009 From @BabakTafreshi: Starry sky of the Himalayas over Mount Everest (left), Mount Lhotse, Ama Dablam (right), and a stupa on the main trek to the Everest base camp. Bright star Capella in constellation Auriga is above Everest. The constellations Perseus and Andromeda are higher up. The Andromeda Galaxy (M31) is the small elongated halo in the middle top. Light of Tengboche appears at the bottom; an important Buddhist monastery located at altitude of 3,867 meters (12,687 ft). . 🌐 twanight.org?id=3005585 © twanight.org/Tafreshi #Babak_Tafreshi #twanight at Sagarmatha National Park

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The World at Night (TWAN) 📷: Winter Stars and a Little Green Fuzzball Photo by @Juan_Carlos_Casado This wide-field image of the winter sky has captured Sirius and constellation Orion with passing clouds on December 26, 2014. Near the center is the little green halo of comet Lovejoy (c/ 2014 Q2). Swipe left, if you can't find it. Photographed from the historic village of Sant Llorenç de la Muga in Catalonia, Spain near the French border. . 🌐 twanight.org?id=3004917 © twanight.org/Casado #Juan_Carlos_Casado #twanight at Catalonia, Spain

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