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The Last Hour of the Day
Caption: This image, taken on 2 May 1997 at Lake Scaffaiolo in Italy, masterfully captures the Sun's descent in a sequence of mirrored reflections on the placid waters. Its breathtaking representation of time showcases the serene beauty of the surroundings, and stands as a timeless testament to the fleeting moments of the day’s final hour.
Credit: Fabrizio Melandri/IAU OAE (CC BY 4.0)
Credit: Fabrizio Melandri/IAU OAE (CC BY 4.0)
License: CC-BY-4.0 Creative Commons تخصیص 4.0 بینالمللی (CC BY 4.0) icons
Where the Sun Sets Every Month
Caption: Taken with a smartphone from San Rafael, Bulacan, Philippines, this series of images capture the changing position of sunset over the year owing to Earth’s axial tilt and orbit around the Sun. From January to December 2022, each image reflects the changing backdrop and position of the Sun at dusk. Observe the changing foliage and the appearance of an electricity pole in October. This collection serves as a visual testament to the celestial dance between Earth and the Sun, and the natural transformations on the ground.
Credit: John Paul Pile/IAU OAE (CC BY 4.0)
Credit: John Paul Pile/IAU OAE (CC BY 4.0)
License: CC-BY-4.0 Creative Commons تخصیص 4.0 بینالمللی (CC BY 4.0) icons
The Eclipse Clock-Eclipse on a Polar Day
Caption: Constructed by combining multiple images over the course of a 24-hour period, the image was captured in Union Glacier, Antarctica, during the total solar eclipse of 4 December 2021, and showcases the day arc of the Sun. It illustrates the unique phenomenon of a polar day, during which the Sun travels around the sky without setting. During polar days, areas within the polar circles experience 24 hours of continuous daylight, and the Sun doesn’t set for an extended period. The image also offers a rare perspective of a solar eclipse, where the Moon passes between the Sun and Earth, and as viewed from Earth. This can be seen in the lower image of the Sun, where the Moon covers the solar disc.
Credit: Stephanie Ziyi Ye/IAU OAE (CC BY 4.0)
Credit: Stephanie Ziyi Ye/IAU OAE (CC BY 4.0)
License: CC-BY-4.0 Creative Commons تخصیص 4.0 بینالمللی (CC BY 4.0) icons
When the Sun Bounces
Caption: This image was taken at Norway's North Cape. Owing to the latitude of this location, the Sun never truly sets during the summer months, from around April to August. This results in the unique spectacle of continuous daylight, known as a polar day. This captivating series of images, taken in 2022, showcases the Sun's relentless journey across the horizon every 30 minutes. At its lowest point in the sky, the Sun does not set, but appears to bounce off the horizon. The globe on the far right in the photo stands as a sentinel, marking the northernmost point of the European continental mainland.
Credit: Milos Obert/IAU OAE (CC BY 4.0)
Credit: Milos Obert/IAU OAE (CC BY 4.0)
License: CC-BY-4.0 Creative Commons تخصیص 4.0 بینالمللی (CC BY 4.0) icons
The Path of the Sun
Caption: This enchanting image, captured in Germany between 21 June 2018 and 21 December 2018, is a poetic blend of art and science, showcasing nature's rhythm and the passage of time. It combines images taken at different times of day over the course of six months. Each curve tracks the Sun’s path (or arc) across the sky on a particular day. The sweeping arc of the Sun is distorted here by the projection, making it appear like a curve. The position of the daily arc across the sky changes with the Sun’s seasonal movement in the sky. Captured using a simple pinhole camera fashioned from a coffee can, it shows the Sun's journey over the course of six months, and the gradual shift of the daily arc from the summer, when it is higher in the sky, to its lowest arc at the winter solstice. Gaps in the Sun’s path represent days or times of day when the Sun was obscured by clouds. This image is a vivid testament to the changing seasons, revealing the Sun's dance in the sky as days grow shorter or longer.
Credit: Frank Niessen/IAU OAE (CC BY 4.0)
Credit: Frank Niessen/IAU OAE (CC BY 4.0)
License: CC-BY-4.0 Creative Commons تخصیص 4.0 بینالمللی (CC BY 4.0) icons
