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APOD: 2023-10-21 - Quarter Moons (Narrated by Emma)
Astronomy Picture of the Day - October 21st, 2023 - Quarter Moons (Narrated by Emma)
Half way between New Moon and Full Moon is the Moon's first quarter phase. That's a quarter of the way around its moonthly orbit. At the first quarter phase, half the Moon's visible side is illuminated by sunlight. For the Moon's third quarter phase, half way between Full Moon and New Moon, sunlight illuminates the other half of the visible lunar disk. At both first and third quarter phases, the terminator, or shadow line separating the lunar night and day, runs down the middle. Near the terminator, long shadows bring lunar craters and mountains in to sharp relief, making the quarter phases a good time to observe the Moon. But in case you missed some, all the quarter phases of the Moon and their calendar dates during 2022 can be found in this well-planned array of telephoto images. Of course, you can observe a first quarter Moon tonight. International: Observe the Moon Night
Image Credit & Copyright: Marcella Giulia Pace
Source: https://apod.nasa.gov/apod/ap231021.html
This video was auto generated using data from NASA Open API.
...
https://www.youtube.com/watch?v=BE6Ihu2qAs8
Half way between New Moon and Full Moon is the Moon's first quarter phase. That's a quarter of the way around its moonthly orbit. At the first quarter phase, half the Moon's visible side is illuminated by sunlight. For the Moon's third quarter phase, half way between Full Moon and New Moon, sunlight illuminates the other half of the visible lunar disk. At both first and third quarter phases, the terminator, or shadow line separating the lunar night and day, runs down the middle. Near the terminator, long shadows bring lunar craters and mountains in to sharp relief, making the quarter phases a good time to observe the Moon. But in case you missed some, all the quarter phases of the Moon and their calendar dates during 2022 can be found in this well-planned array of telephoto images. Of course, you can observe a first quarter Moon tonight. International: Observe the Moon Night
Image Credit & Copyright: Marcella Giulia Pace
Source: https://apod.nasa.gov/apod/ap231021.html
This video was auto generated using data from NASA Open API.
...
https://www.youtube.com/watch?v=BE6Ihu2qAs8
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Astronomy Picture of the Day - July 10th, 2022 - In the Center of the Cat's Eye Nebula (Narrated by Brian)
Three thousand light-years away, a dying star throws off shells of glowing gas. This image from the Hubble Space Telescope reveals the Cat's Eye Nebula (NGC 6543), to be one of the most complex planetary nebulae known. Spanning half a light-year, the features seen in the Cat's Eye are so complex that astronomers suspect the bright central object may actually be a binary star system. The term planetary nebula, used to describe this general class of objects, is misleading. Although these objects may appear round and planet-like in small telescopes, high resolution images with large telescopes reveal them to be stars surrounded by cocoons of gas blown off in the late stages of stellar evolution. Gazing into this Cat's Eye, astronomers may well be seeing more than detailed structure, they may be seeing the fate of our Sun, destined to enter its own planetary nebula phase of evolution ... in about 5 billion years.
Image Credit & Copyright: Raul Villaverde
Source: https://apod.nasa.gov/apod/ap220710.html
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Astronomy Picture of the Day - March 17th, 2020 - M77: Spiral Galaxy with an Active Center (Narrated by Amy)
What's happening in the center of nearby spiral galaxy M77? The face-on galaxy lies a mere 47 million light-years away toward the constellation of the Sea Monster (Cetus). At that estimated distance, this gorgeous island universe is about 100 thousand light-years across. Also known as NGC 1068, its compact and very bright core is well studied by astronomers exploring the mysteries of supermassive black holes in active Seyfert galaxies. M77 and its active core glows bright at x-ray, ultraviolet, visible, infrared, and radio wavelengths. The featured sharp image of M77 was taken by the Hubble Space Telescope and is dominated by the (visible) red light emitted by hydrogen. The image shows details of the spiral's winding spiral arms as traced by obscuring dust clouds, and red-tinted star forming regions close in to the galaxy's luminous core. Astrophysicists: Browse 2,100+ codes in the Astrophysics Source Code Library
Source: https://apod.nasa.gov/apod/ap200317.html
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Astronomy Picture of the Day - August 27th, 2023 - Three Galaxies and a Comet (Narrated by Brian)
Diffuse starlight and dark nebulae along the southern Milky Way arc over the horizon and sprawl diagonally through this gorgeous nightscape. The breath-taking mosaic spans a wide 100 degrees, with the rugged terrain of the Patagonia, Argentina region in the foreground. Along with the insider's view of our own galaxy, the image features our outside perspective on two irregular satellite galaxies - the Large and Small Magellanic Clouds. The scene also captures the broad tail and bright coma of Comet McNaught, the Great Comet of 2007.
Image Credit & Copyright:
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Source: https://apod.nasa.gov/apod/ap230827.html
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Wikipedia Picture of the Day - April 27th, 2020 - Caroline Rémy de Guebhard (Narrated by Brian)
Caroline Rémy de Guebhard (27 April 1855 – 24 April 1929) was a French anarchist, journalist, and feminist, best known under the pen name Séverine. She was associated with Jules Vallès and became involved in his socialist publication Cri du Peuple, taking control of the newspaper when his health deteriorated. She left in 1888 after a confrontation with Marxist journalist Jules Guesde, but continued to write for other publications, promoting women's emancipation and denouncing social injustices.
This picture of Rémy is a carte de visite taken by French photographer Nadar sometime between 1889 and 1899. The photograph, entitled "Séverine, debout, un poing sur la hanche" ('Séverine, standing, a fist on her hip'), is in the collection of the Bibliothèque Marguerite Durand in Paris.
Photograph credit: Nadar; restored by Adam Cuerden
Source: https://en.wikipedia.org/wiki/Template:POTD/2020-04-27
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Wikipedia Picture of the Day - August 21st, 2023 - Lion (Narrated by Brian)
The lion (Panthera leo) is a large cat species in the genus Panthera native to Africa and India. It has a muscular, broad-chested body; short, rounded head; round ears; and a hairy tuft at the end of its tail. It is sexually dimorphic; adult males are larger than females and have a prominent mane. The lion is a social species, forming groups called prides. A pride consists of a few adult males, related females, and cubs. Groups of female lions usually hunt together, preying mostly on large ungulates. It is an apex and keystone predator. Although some lions scavenge when opportunities occur and have been known to hunt humans, they typically do not actively seek out and prey on humans. This six-year-old male lion was photographed in the Phinda Private Game Reserve in KwaZulu-Natal, South Africa.
Photograph credit: Charles J. Sharp
Source: https://en.wikipedia.org/wiki/Template:POTD/2023-08-21
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Astronomy Picture of the Day - July 12th, 2023 - Rings and Bar of Spiral Galaxy NGC 1398 (Narrated by Salli)
Why do some spiral galaxies have a ring around the center? Spiral galaxy NGC 1398 not only has a ring of pearly stars, gas and dust around its center, but a bar of stars and gas across its center, and spiral arms that appear like ribbons farther out. The featured deep image from Observatorio El Sauce in Chile shows the grand spiral galaxy in impressive detail. NGC 1398 lies about 65 million light years distant, meaning the light we see today left this galaxy when dinosaurs were disappearing from the Earth. The photogenic galaxy is visible with a small telescope toward the constellation of the Furnace (Fornax). The ring near the center is likely an expanding density wave of star formation, caused either by a gravitational encounter with another galaxy, or by the galaxy's own gravitational asymmetries.
Source: https://apod.nasa.gov/apod/ap230712.html
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Astronomy Picture of the Day - November 1st, 2023 - Annular Solar Eclipse over Utah (Narrated by Salli)
Part of the Sun disappeared earlier this month, but few people were worried. The missing part, which included the center from some locations, just went behind the Moon in what is known as an annular solar eclipse. Featured here is an eclipse sequence taken as the Moon was overtaking the rising Sun in the sky. The foreground hill is Factory Butte in Utah, USA. The rays flaring out from the Sun are not real -- they result from camera aperture diffraction and are known as sunstar. The Moon is real, but it is artificially brightened to enhance its outline -- which helps the viewer better visualize the Moon's changing position during this ring-of-fire eclipse. As stunning as this eclipse sequence is, it was considered just practice by the astrophotographer. The reason? She hopes to use this experience to better photograph the total solar eclipse that will occur over North America on April 8, 2024. Apply today (USA): Become a NASA Partner Eclipse Ambassador Eclipse Album: Selected images sent in to APOD
Image Credit & Copyright:
MaryBeth Kiczenski
Source: https://apod.nasa.gov/apod/ap231101.html
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Wikipedia Picture of the Day - February 15th, 2022 - Cultivar (Narrated by Salli)
Osteospermum is a genus of flowering plants in Calenduleae, one of the smaller tribes of the family Asteraceae, which includes sunflowers and daisies. The plants are also known as daisybushes and African daisies. The genus is closely related to the Chrysanthemoides. This photograph depicts a cultivar of Osteospermum known as 'Pink Whirls', which has flowers featuring spoon-shaped petals.
Photograph credit: Jon Sullivan
Source: https://en.wikipedia.org/wiki/Template:POTD/2022-02-15
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Wikipedia Picture of the Day - June 28th, 2022 - Silver certificates (Narrated by Salli)
$1Martha Washington
$2William Windom
$5Ulysses S. Grant
$10Thomas A. Hendricks
$20Daniel Manning
$50Edward Everett
$100James Monroe
$1000William L. Marcy
Silver certificates are a type of representative money issued between 1878 and 1964 in the United States as part of its circulation of paper currency. They were produced in response to silver agitation by citizens who were angered by the Coinage Act of 1873, which had effectively placed the United States on a gold standard. Since 1968 they have been redeemable only in Federal Reserve Notes and are thus obsolete, but they remain legal tender at their face value and hence are still an accepted form of currency. This is a complete set of the 1891 series of large-size silver certificates, designed by the Bureau of Engraving and Printing and comprising eight denominations from $1 to $1000. Each banknote bears the signatures of James Fount Tillman (Register of the Treasury) and Daniel N. Morgan (Treasurer of the United States), and a portrait of a different individual, identified above.
Banknote design credit: Bureau of Engraving and Printing; photographed by Andrew Shiva
Source: https://en.wikipedia.org/wiki/Template:POTD/2022-06-28
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