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APOD: 2021-07-26 - CG4: A Ruptured Cometary Globule (Narrated by Emma)
Astronomy Picture of the Day - July 26th, 2021 - CG4: A Ruptured Cometary Globule (Narrated by Emma)
Can a gas cloud grab a galaxy? It's not even close. The "claw" of this odd looking "creature" in the featured photo is a gas cloud known as a cometary globule. This globule, however, has ruptured. Cometary globules are typically characterized by dusty heads and elongated tails. These features cause cometary globules to have visual similarities to comets, but in reality they are very much different. Globules are frequently the birthplaces of stars, and many show very young stars in their heads. The reason for the rupture in the head of this object is not yet known. The galaxy to the left of the globule is huge, very far in the distance, and only placed near CG4 by chance superposition.
Image Credit & Copyright: Nicolas RollandMartin Pugh
Source: https://apod.nasa.gov/apod/ap210726.html
This video was auto generated using data from NASA Open API.
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https://www.youtube.com/watch?v=dYQ7gylVDdA
Can a gas cloud grab a galaxy? It's not even close. The "claw" of this odd looking "creature" in the featured photo is a gas cloud known as a cometary globule. This globule, however, has ruptured. Cometary globules are typically characterized by dusty heads and elongated tails. These features cause cometary globules to have visual similarities to comets, but in reality they are very much different. Globules are frequently the birthplaces of stars, and many show very young stars in their heads. The reason for the rupture in the head of this object is not yet known. The galaxy to the left of the globule is huge, very far in the distance, and only placed near CG4 by chance superposition.
Image Credit & Copyright: Nicolas RollandMartin Pugh
Source: https://apod.nasa.gov/apod/ap210726.html
This video was auto generated using data from NASA Open API.
...
https://www.youtube.com/watch?v=dYQ7gylVDdA
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Astronomy Picture of the Day - April 27th, 2024 - All Sky Moon Shadow (Narrated by Emma)
If the Sun is up but the sky is dark and the horizon is bright all around, you might be standing in the Moon's shadow during a total eclipse of the Sun. In fact, the all-sky Moon shadow shown in this composited panoramic view was captured from a farm near Shirley, Arkansas, planet Earth. The exposures were made under clear skies during the April 8 total solar eclipse. For that location near the center line of the Moon's shadow track, totality lasted over 4 minutes. Along with the solar corona surrounding the silhouette of the Moon planets and stars were visible during the total eclipse phase. Easiest to see here are bright planets Venus and Jupiter, to the lower right and upper left of the eclipsed Sun.
Image Credit & Copyright: Tunc Tezel
Source: https://apod.nasa.gov/apod/ap240427.html
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Wikipedia Picture of the Day - December 11th, 2019 - Japanese government-issued Philippine peso (Narrated by Matthew)
The Japanese government-issued Philippine peso was a form of fiat money issued in the Philippines by the Japanese government during World War II as part of its occupation of the archipelago. The first issue in 1942 had notes valued at 1, 5, 10 and 50 centavos, and 1, 5 and 10 pesos. A new series of peso denominations were issued in 1943, and hyperinflation resulted in a further issue in 1944, with the higher value notes of 100 and 500 pesos being added.
This picture shows the obverse (top) and reverse (bottom) sides of a 1000-peso note that was issued in 1945, shortly before the country was liberated by Allied troops. The banknote is in the National Numismatic Collection of the Smithsonian Institution's National Museum of American History.
Banknote credit: Empire of Japan; photographed by Andrew Shiva
Source: https://en.wikipedia.org/wiki/Template:POTD/2019-12-11
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Astronomy Picture of the Day - July 8th, 2021 - Perihelion to Aphelion (Narrated by Joanna)
Aphelion for 2021 occurred on July 5th. That's the point in Earth's elliptical orbit when it is farthest from the Sun. Of course, the distance from the Sun doesn't determine the seasons. Those are governed by the tilt of Earth's axis of rotation, so July is still summer in the north and winter in the southern hemisphere. But it does mean that on July 5 the Sun was at its smallest apparent size when viewed from planet Earth. This composite neatly compares two pictures of the Sun, both taken with the same telescope and camera. The left half was captured close to the date of the 2021 perihelion (January 2), the closest point in Earth's orbit. The right was recorded just before the aphelion in 2021. Otherwise difficult to notice, the change in the Sun's apparent diameter between perihelion and aphelion amounts to a little over 3 percent.
Image Credit & Copyright: Richard Jaworski
Source: https://apod.nasa.gov/apod/ap210708.html
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Astronomy Picture of the Day - December 19th, 2023 - NGC 1499: The California Nebula (Narrated by Amy)
Could Queen Calafia's mythical island exist in space? Perhaps not, but by chance the outline of this molecular space cloud echoes the outline of the state of California, USA. Our Sun has its home within the Milky Way's Orion Arm, only about 1,000 light-years from the California Nebula. Also known as NGC 1499, the classic emission nebula is around 100 light-years long. On the featured image, the most prominent glow of the California Nebula is the red light characteristic of hydrogen atoms recombining with long lost electrons, stripped away (ionized) by energetic starlight. The star most likely providing the energetic starlight that ionizes much of the nebular gas is the bright, hot, bluish Xi Persei just to the right of the nebula. A regular target for astrophotographers, the California Nebula can be spotted with a wide-field telescope under a dark sky toward the constellation of Perseus, not far from the Pleiades. Explore Your Universe: Random APOD Generator
Image Credit & Copyright:
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Source: https://apod.nasa.gov/apod/ap231219.html
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Wikipedia Picture of the Day - December 19th, 2021 - Common house gecko (Narrated by Emma)
The common house gecko (Hemidactylus frenatus) is a species of lizard native to southern and southeastern Asia. The undersides of this mating pair are viewed through the glass of a window. The male has inserted one of his two intromittent organs, the hemipenis, into the cloaca of the female. The adhesive lamellae with setae on the underside of the feet adhere to the glass and allow the reptiles to maintain traction on the smooth surface.
Photograph credit: Basile Morin
Source: https://en.wikipedia.org/wiki/Template:POTD/2021-12-19
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Wikipedia Picture of the Day - May 16th, 2022 - Government House, Baku (Narrated by Brian)
The Government House of Baku is a government building housing various state ministries of Azerbaijan. Construction took place between 1936 and 1952 and led to the formation of Lenin Square (later renamed to Azadliq Square) seen here. In 1955, a monument to Vladimir Lenin was installed in front of the building, but this was removed in 1990 during the Azerbaijani independence movement in the aftermath of bloody Black January. A large Azerbaijan flag now flies where Lenin's statue once stood.
Photograph credit: Diego Delso
Source: https://en.wikipedia.org/wiki/Template:POTD/2022-05-16
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Astronomy Picture of the Day - May 11th, 2022 - Gravity's Grin (Narrated by Salli)
Albert Einstein's general theory of relativity, published over 100 years ago, predicted the phenomenon of gravitational lensing. And that's what gives these distant galaxies such a whimsical appearance, seen through the looking glass of X-ray and optical image data from the Chandra and Hubble space telescopes. Nicknamed the Cheshire Cat galaxy group, the group's two large elliptical galaxies are suggestively framed by arcs. The arcs are optical images of distant background galaxies lensed by the foreground group's total distribution of gravitational mass. Of course, that gravitational mass is dominated by dark matter. The two large elliptical "eye" galaxies represent the brightest members of their own galaxy groups which are merging. Their relative collisional speed of nearly 1,350 kilometers/second heats gas to millions of degrees producing the X-ray glow shown in purple hues. Curiouser about galaxy group mergers? The Cheshire Cat group grins in the constellation Ursa Major, some 4.6 billion light-years away.
Source: https://apod.nasa.gov/apod/ap220511.html
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Astronomy Picture of the Day - March 30th, 2021 - Red Sprite Lightning over the Andes (Narrated by Amy)
What are those red filaments in the sky? They are a rarely seen form of lightning confirmed only about 30 years ago: red sprites. Recent research has shown that following a powerful positive cloud-to-ground lightning strike, red sprites may start as 100-meter balls of ionized air that shoot down from about 80-km high at 10 percent the speed of light. They are quickly followed by a group of upward streaking ionized balls. The featured image was taken earlier this year from Las Campanas observatory in Chile over the Andes Mountains in Argentina. Red sprites take only a fraction of a second to occur and are best seen when powerful thunderstorms are visible from the side. APOD via Instagram in: English, Indonesian, Persian, and Portuguese
Image Credit & Copyright: Yuri BeletskyCarnegieLas Campanas ObservatoryTWAN
Source: https://apod.nasa.gov/apod/ap210330.html
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Wikipedia Picture of the Day - November 6th, 2023 - Georgians (Narrated by Brian)
Georgians are an ethnic group native to Georgia and the Caucasus, with diaspora communities throughout Russia, Turkey, Greece, Iran, Ukraine, the United States and the European Union. Georgians arose from Colchian and Iberian civilizations of classical antiquity. In the early 4th century, the Georgians became one of the first to embrace Christianity and now the majority of Georgians are Orthodox Christians. The Georgian nation was formed out of a diverse set of geographic subgroups, each with its characteristic traditions, manners, dialects and, in the case of the Svans and Mingrelians, regional languages. The Georgian language, with its own unique writing system and extensive written tradition, which goes back to the 5th century, is the official language of Georgia. According to the State Ministry on Diaspora Issues of Georgia, unofficial statistics say that there are more than five million Georgians across the world. This photograph, taken around 1888 in Mestia, shows an elderly Svan peasant with a dagger and smoking a long pipe. The image is in the collection of the Library of Congress in the United States.
Photograph credit: unknown; restored by Adam Cuerden
Source: https://en.wikipedia.org/wiki/Template:POTD/2023-11-06
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