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Wikipedia Picture of the Day: 2021-03-16 - Saint Petersburg (Narrated by Salli)
Wikipedia Picture of the Day - March 16th, 2021 - Saint Petersburg (Narrated by Salli)
Saint Petersburg, the second-largest city in Russia, is situated at the head of the Gulf of Finland on the Baltic Sea. This photograph shows the eastern end of Vasilyevsky Island, known as the spit, surrounded by the river Neva. The Old Saint Petersburg Stock Exchange and Rostral Columns, built in the Greek Revival style in the first decade of the nineteenth century, is visible in the centre.
Photograph credit: Alexander Savin
Source: https://en.wikipedia.org/wiki/Template:POTD/2021-03-16
This video was auto generated using data and media from Wikipedia.
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https://www.youtube.com/watch?v=T4b9YMSasYs
Saint Petersburg, the second-largest city in Russia, is situated at the head of the Gulf of Finland on the Baltic Sea. This photograph shows the eastern end of Vasilyevsky Island, known as the spit, surrounded by the river Neva. The Old Saint Petersburg Stock Exchange and Rostral Columns, built in the Greek Revival style in the first decade of the nineteenth century, is visible in the centre.
Photograph credit: Alexander Savin
Source: https://en.wikipedia.org/wiki/Template:POTD/2021-03-16
This video was auto generated using data and media from Wikipedia.
...
https://www.youtube.com/watch?v=T4b9YMSasYs
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Astronomy Picture of the Day - March 31st, 2021 - M87's Central Black Hole in Polarized Light (Narrated by Salli)
To play on Carl Sagan’s famous words "If you wish to make black hole jets, you must first create magnetic fields." The featured image represents the detected intrinsic spin direction (polarization) of radio waves. The polarizationi is produced by the powerful magnetic field surrounding the supermassive black hole at the center of elliptical galaxy M87. The radio waves were detected by the Event Horizon Telescope (EHT), which combines data from radio telescopes distributed worldwide. The polarization structure, mapped using computer generated flow lines, is overlaid on EHT’s famous black hole image, first published in 2019. The full 3-D magnetic field is complex. Preliminary analyses indicate that parts of the field circle around the black hole along with the accreting matter, as expected. However, another component seemingly veers vertically away from the black hole. This component could explain how matter resists falling in and is instead launched into M87’s jet.
Source: https://apod.nasa.gov/apod/ap210331.html
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Beautiful News Daily - March 9th, 2020 - Plastic Microbead Bans Are Spreading (Narrated by Salli)
They’re less than a millimetre across. They’re used in cosmetic and cleaning products. Just one shower can send 100,000 of them into sewage systems. Filters rarely catch them.
Microbeads are hazardous for aquatic animals and the environment. Countries are finally legislating. The Netherlands was the first. China’s working towards a full ban. By 2022, nearly half the world will have seen sense.
Credits: David McCandless, InformationIsBeautiful.net.
License: Creative Commons BY-SA 4.0 https://creativecommons.org/licenses/by-sa/4.0/
Source: https://informationisbeautiful.net/beautifulnews/412-microbead-bans-spreading
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Astronomy Picture of the Day - June 26th, 2022 - Light Echoes from V838 Mon (Narrated by Brian)
What caused this outburst of V838 Mon? For reasons unknown, star V838 Mon's outer surface suddenly greatly expanded with the result that it became one of the brighter stars in the Milky Way Galaxy in early 2002. Then, just as suddenly, it shrunk and faded. A stellar flash like this had never been seen before -- supernovas and novas expel matter out into space. Although the V838 Mon flash appears to expel material into space, what is seen in the featured image from the Hubble Space Telescope is actually an outwardly expanding light echo of the original flash. In a light echo, light from the flash is reflected by successively more distant surfaces in the complex array of ambient interstellar dust that already surrounded the star. V838 Mon lies about 20,000 light years away toward the constellation of the unicorn (Monoceros), while the light echo above spans about six light years in diameter.
Source: https://apod.nasa.gov/apod/ap220626.html
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Astronomy Picture of the Day - September 17th, 2022 - Perseverance in Jezero Crater's Delta (Narrated by Emma)
The Perseverance rover's Mastcam-Z captured images to create this mosaic on August 4, 2022. The car-sized robot was continuing its exploration of the fan-shaped delta of a river that, billions of years ago, flowed into Jezero Crater on Mars. Sedimentary rocks preserved in Jezero's delta are considered one of the best places on Mars to search for potential signs of ancient microbial life and sites recently sampled by the rover, dubbed Wildcat Ridge and Skinner Ridge, are at lower left and upper right in the frame. The samples taken from these areas were sealed inside ultra-clean sample tubes, ultimately intended for return to Earth by future missions. Starting with the Pathfinder Mission and Mars Global Surveyor in 1997, the last 25 years of a continuous robotic exploration of the Red Planet has included orbiters, landers, rovers, and a helicopter from planet Earth
Source: https://apod.nasa.gov/apod/ap220917.html
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Wikipedia Picture of the Day - August 6th, 2021 - Jean Augustin Daiwaille (Narrated by Brian)
Jean Augustin Daiwaille (6 August 1786 – 11 April 1850) was a Dutch portrait painter. Born in Cologne, he travelled to Amsterdam as a young man, where he studied under Adriaan de Lelie. He was the director of the Rijksakademie from 1820 to 1826, where he was instrumental in obtaining a lithographic press and instructing students in its use and technique. This self-portrait of Daiwaille, executed in pastel on parchment, is in the collection of the Rijksmuseum in Amsterdam.
Painting credit: Jean Augustin Daiwaille
Source: https://en.wikipedia.org/wiki/Template:POTD/2021-08-06
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Wikipedia Picture of the Day - September 11th, 2022 - One World Trade Center (Narrated by Emma)
One World Trade Center, seen here amongst the skyline of Lower Manhattan, is the main building of the rebuilt World Trade Center complex in New York City. It is the tallest building in the United States, the tallest in the Western Hemisphere, and the seventh-tallest in the world. The supertall structure has the same name as the North Tower of the original World Trade Center, which was destroyed in the terrorist attacks of September 11, 2001.
Photograph credit: King of Hearts
Source: https://en.wikipedia.org/wiki/Template:POTD/2022-09-11
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Wikipedia Picture of the Day - July 22nd, 2020 - Marriage A-la-Mode: 4. The Toilette (Narrated by Matthew) The Toilette is the fourth of a series of six oil-...
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Astronomy Picture of the Day - December 29th, 2019 - Cassini Spacecraft Crosses Saturn's Ring Plane (Narrated by Brian)
If this is Saturn, where are the rings? When Saturn's "appendages" disappeared in 1612, Galileo did not understand why. Later that century, it became understood that Saturn's unusual protrusions were rings and that when the Earth crosses the ring plane, the edge-on rings will appear to disappear. This is because Saturn's rings are confined to a plane many times thinner, in proportion, than a razor blade. In modern times, the robot Cassini spacecraft orbiting Saturn frequently crossed Saturn's ring plane during its mission to Saturn, from 2004 to 2017. A series of plane crossing images from 2005 February was dug out of the vast online Cassini raw image archive by interested Spanish amateur Fernando Garcia Navarro. Pictured here, digitally cropped and set in representative colors, is the striking result. Saturn's thin ring plane appears in blue, bands and clouds in Saturn's upper atmosphere appear in gold. Details of Saturn's rings can be seen in the high dark shadows across the top of this image, taken back in 2005. The moons Dione and Enceladus appear as bumps in the rings. Free Presentation: APOD Editor to show best astronomy images of 2019 -- and the decade -- in NYC on January 3
Source: https://apod.nasa.gov/apod/ap191229.html
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Astronomy Picture of the Day - November 30th, 2019 - Star Trails for a Red Planet (Narrated by Emma)
Does Mars have a north star? In long exposures of Earth's night sky, star trails make concentric arcs around the north celestial pole, the direction of our fair planet's axis of rotation. Bright star Polaris is presently the Earth's North Star, close on the sky to Earth's north celestial pole. But long exposures on Mars show star trails too, concentric arcs about a celestial pole determined by Mars' axis of rotation. Tilted like planet Earth's, the martian axis of rotation points in a different direction in space though. It points to a place on the sky between stars in Cygnus and Cepheus with no bright star comparable to Earth's north star Polaris nearby. So even though this ruddy, weathered landscape is remarkably reminiscent of terrain in images from the martian surface, the view must be from planet Earth, with north star Polaris near the center of concentric star trails. The landforms in the foreground are found in Qinghai Province in northwestern China.
Image Credit & Copyright: Dengyi Huang
Source: https://apod.nasa.gov/apod/ap191130.html
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