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APOD: 2021-01-17 - Jets from Unusual Galaxy Centaurus A (Narrated by Brian)
Astronomy Picture of the Day - January 17th, 2021 - Jets from Unusual Galaxy Centaurus A (Narrated by Brian)
The jets emanating from Centaurus A are over a million light years long. These jets of streaming plasma, expelled by a giant black hole in the center of this spiral galaxy, light up this composite image of Cen A. Exactly how the central black hole expels infalling matter remains unknown. After clearing the galaxy, however, the jets inflate large radio bubbles that likely glow for millions of years. If energized by a passing gas cloud, the radio bubbles can even light up again after billions of years. X-ray light is depicted in the featured composite image in blue, while microwave light is colored orange. The base of the jet in radio light shows details of the innermost light year of the central jet.
Source: https://apod.nasa.gov/apod/ap210117.html
This video was auto generated using data from NASA Open API.
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https://www.youtube.com/watch?v=2rTzPmR6U7U
The jets emanating from Centaurus A are over a million light years long. These jets of streaming plasma, expelled by a giant black hole in the center of this spiral galaxy, light up this composite image of Cen A. Exactly how the central black hole expels infalling matter remains unknown. After clearing the galaxy, however, the jets inflate large radio bubbles that likely glow for millions of years. If energized by a passing gas cloud, the radio bubbles can even light up again after billions of years. X-ray light is depicted in the featured composite image in blue, while microwave light is colored orange. The base of the jet in radio light shows details of the innermost light year of the central jet.
Source: https://apod.nasa.gov/apod/ap210117.html
This video was auto generated using data from NASA Open API.
...
https://www.youtube.com/watch?v=2rTzPmR6U7U
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Big storms are different on Jupiter. On Earth, huge hurricanes and colossal cyclones are centered on regions of low pressure, but on Jupiter, it is the high-pressure, anti-cyclone storms that are the largest. On Earth, large storms can last weeks, but on Jupiter they can last years. On Earth, large storms can be as large as a country, but on Jupiter, large storms can be as large as planet Earth. Both types of storms are known to exhibit lightning. The featured image of Jupiter's clouds was composed from images and data captured by the robotic Juno spacecraft as it swooped close to the massive planet in August 2020. A swirling white oval is visible nearby, while numerous smaller cloud swirls extend into the distance. On Jupiter, light-colored clouds are usually higher up than dark clouds. Despite their differences, studying storm clouds on distant Jupiter provides insights into storms and other weather patterns on familiar Earth. Surf the Universe: Random APOD Generator
Source: https://apod.nasa.gov/apod/ap230523.html
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Astronomy Picture of the Day - September 9th, 2022 - Interstellar Voyager (Narrated by Brian)
Voyager 1 and Voyager 2 were launched in 1977 on a grand tour of the outer planets of the Solar System. They have become the longest operating and most distant spacecraft from Earth. Both have traveled beyond the heliosphere, the realm defined by the influence of the solar wind and the Sun's magnetic field. On the 45th year of their journey toward the stars Voyager 1 and 2 reached nearly 22 light-hours and 18 light-hours from the Sun respectively and remain the only spacecraft currently exploring interstellar space. Each spacecraft carries a 12-inch gold-plated copper disk with recordings of sounds, pictures and messages. The Golden Records are intended to communicate a story of life and culture on planet Earth, preserved in a medium that can survive an interstellar journey for a billion years.
Source: https://apod.nasa.gov/apod/ap220909.html
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Wikipedia Picture of the Day - May 8th, 2022 - Hernando de Soto (Narrated by Emma)
Hernando de Soto (c. 1500 – 1542) was a Spanish explorer and conquistador who was involved in expeditions in Nicaragua and the Yucatán Peninsula. He played an important role in Francisco Pizarro's conquest of the Inca Empire in present-day Peru, but is best known for leading the first European expedition deep into the territory of the modern-day United States. He was the first European documented as having crossed the Mississippi River, which he did on May 8, 1541, depicted in this engraved vignette, an example of art on United States banknotes. Produced for the Department of the Treasury's Bureau of Engraving and Printing, the engraving is of William Henry Powell's painting Discovery of the Mississippi by De Soto, which hangs in the Capitol rotunda in Washington, D.C.
Engraving credit: Frederick Girsch, after William Henry Powell; restored by Andrew Shiva
Source: https://en.wikipedia.org/wiki/Template:POTD/2022-05-08
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Astronomy Picture of the Day - November 14th, 2023 - Three Planets Rock (Narrated by Amy)
In the fading darkness before dawn, a tilted triangle appeared to balance atop a rock formation off the southern tip of Sicily. Making up the points of the triangle are three of the four brightest objects visible in Earth’s sky: Jupiter, Venus and the Moon. Though a thin waning crescent, most of the moon’s disk is visible due to earthshine. Captured in this image on 2022 April 27, Venus (center) and Jupiter (left) are roughly three degrees apart -- and were headed toward a close conjunction. Conjunctions of Venus and Jupiter occur about once a year and are visible either in the east before sunrise or in the west after sunset. The featured image was taken about an hour before the arrival of the brightest object in Earth’s sky – the Sun.
Image Credit & Copyright:
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Source: https://apod.nasa.gov/apod/ap231114.html
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Astronomy Picture of the Day - October 21st, 2019 - A Mercury Transit Music Video from SDO (Narrated by Emma)
What's that small black dot moving across the Sun? Mercury. Possibly the clearest view of Mercury crossing in front of the Sun in 2016 May was from Earth orbit. The Solar Dynamics Observatory obtained an uninterrupted vista recording it not only in optical light but also in bands of ultraviolet light. Featured here is a composite movie of the crossing set to music. Although the event might prove successful scientifically for better determining components of Mercury' ultra-thin atmosphere, the event surely proved successful culturally by involving people throughout the world in observing a rare astronomical phenomenon. Many spectacular images of this Mercury transit from around (and above) the globe were proudly displayed. The next transit of Mercury will take place in three weeks: on 2019 November 11. Astrophysicists: Browse 2,000+ codes in the Astrophysics Source Code Library
Source: https://apod.nasa.gov/apod/ap191021.html
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Wikipedia Picture of the Day - March 8th, 2020 - Portrait of Comtesse d'Haussonville (Narrated by Emma)
The Portrait of Comtesse d'Haussonville is an 1845 oil-on-canvas painting by French Neoclassical artist Jean-Auguste-Dominique Ingres. Although more interested in depicting historical scenes, Ingres received few commissions for them, and found that he could better support his family if he painted portraits instead. By 1845, he was at the height of his fame as a portrait painter, and accepted a commission to paint Louise de Broglie, Countess d'Haussonville. She was 27 at the time; Ingres had sketched her with black chalk as a preparatory drawing two or three years earlier, and begun an oil-on-canvas painting, but that was abandoned when she became pregnant with her third child and was thus unable to pose further. Ingres's new portrait differs from the original in showing her facing in the opposite direction and introducing her reflection in a mirror. The countess found the long and slow sittings wearisome, at one stage complaining that "for the last nine days Ingres has been painting on one of the hands". The painting is now part of the Frick Collection in New York City.
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Source: https://en.wikipedia.org/wiki/Template:POTD/2020-03-08
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Astronomy Picture of the Day - October 13th, 2023 - Hydrogen Clouds of M33 (Narrated by Brian)
Gorgeous spiral galaxy Messier 33 seems to have more than its fair share of glowing hydrogen gas. A prominent member of the local group of galaxies, M33 is also known as the Triangulum Galaxy and lies a mere 3 million light-years away. The galaxy's central 30,000 light-years or so are shown in this sharp galaxy portrait. The portrait features M33's reddish ionized hydrogen clouds or HII regions. Sprawling along loose spiral arms that wind toward the core, M33's giant HII regions are some of the largest known stellar nurseries, sites of the formation of short-lived but very massive stars. Intense ultraviolet radiation from the luminous, massive stars ionizes the surrounding hydrogen gas and ultimately produces the characteristic red glow. In this image, broadband data were combined with narrowband data recorded through a hydrogen-alpha filter. That filter transmits the light of the strongest visible hydrogen emission line.
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Source: https://apod.nasa.gov/apod/ap231013.html
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Source: https://apod.nasa.gov/apod/ap221011.html
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