Wikipedia Picture of the Day: 2021-11-09 - Fredrikke Mørck (Narrated by Salli)
Wikipedia Picture of the Day - November 9th, 2021 - Fredrikke Mørck (Narrated by Salli)
Fredrikke Mørck (9 November 1861 – 14 October 1934) was a Norwegian feminist, editor and school teacher. Born in Trondheim, she started her own school, Fredrikke Mørcks Pigeskole, around 1905. She contributed to the feminist magazine Nylænde from its inception in 1893, and served as its editor from 1916 to 1927. Mørck chaired the Norwegian Association for Women's Rights from 1926 to 1930.
Photograph credit: unknown; restored by Adam Cuerden
Astronomy Picture of the Day - April 2nd, 2024 - Detailed View of a Solar Eclipse Corona (Narrated by Amy)
Only in the fleeting darkness of a total solar eclipse is the light of the solar corona easily visible. Normally overwhelmed by the bright solar disk, the expansive corona, the sun's outer atmosphere, is an alluring sight. But the subtle details and extreme ranges in the corona's brightness, although discernible to the eye, are notoriously difficult to photograph. Pictured here, however, using multiple images and digital processing, is a detailed image of the Sun's corona taken during the April 20, 2023 total solar eclipse from Exmouth, Australia. Clearly visible are intricate layers and glowing caustics of an ever changing mixture of hot gas and magnetic fields. Bright looping prominences appear pink just around the Sun's limb. A similar solar corona might be visible through clear skies in a narrow swath across the North America during the total solar eclipse that occurs just six days from today NASA Coverage: Total Solar Eclipse of 2024 April 8
Image Credit & Copyright:
Phil Hart
Source: https://apod.nasa.gov/apod/ap240402.html
This video was auto generated using data from NASA Open API.
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https://www.youtube.com/watch?v=YwNxgeX7_AE
Wikipedia Picture of the Day - October 7th, 2021 - Niels Bohr (Narrated by Joanna)
Niels Bohr (7 October 1885 – 18 November 1962) was a Danish physicist who made foundational contributions to understanding atomic structure and quantum theory. He advanced the theory of electrons travelling in orbits around the atom's nucleus, with the chemical properties of each element being largely determined by the number of electrons in the outer orbits of its atoms. He introduced the idea that an electron could drop from a higher-energy orbit to a lower one, in the process emitting a quantum of discrete energy. For his work, he received the Nobel Prize in Physics in 1922.
Photograph credit: Bain News Service; restored by Bammesk
Source: https://en.wikipedia.org/wiki/Template:POTD/2021-10-07
This video was auto generated using data and media from Wikipedia.
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https://www.youtube.com/watch?v=b8Ko5uDg9II
Astronomy Picture of the Day - January 20th, 2020 - Quadrantid Meteors through Orion (Narrated by Emma)
Why are these meteor trails nearly parallel? Because they were all shed by the same space rock and so can be traced back to the same direction on the sky: the radiant of the Quadrantid Meteor Shower. This direction used to be toward the old constellation of Quadrans Muralis, hence the name Quadrantids, but when the International Astronomical Union formulated its list of modern constellations in 1922, this constellation did not make the list. Even though the meteors are now considered to originate from the recognized constellation of Bootes, the old name stuck. Regardless of the designation, every January the Earth moves through a dust stream and bits of this dust glow as meteors as they heat up in Earth's atmosphere. The featured image composite was taken on January 4 with a picturesque snowy Slovakian landscape in the foreground, and a deep-exposure sky prominently featuring the constellation Orion in the background. The red star Betelgeuse appears unusually dim -- its fading over the past few months is being tracked by astronomers. Teachers: APOD in the Classroom
Image Credit & Copyright: Petr
Horálek
Source: https://apod.nasa.gov/apod/ap200120.html
This video was auto generated using data from NASA Open API.
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https://www.youtube.com/watch?v=JgmtceuvxjU
Wikipedia Picture of the Day - November 1st, 2021 - Stereoscopy (Narrated by Brian)
Stereoscopy is a technique for creating or enhancing the illusion of depth in an image by means of stereopsis for binocular vision.
This image of two Passiflora caerulea flowers is arranged as a stereo image pair; it can be viewed stereoscopically by using the cross-eyed viewing method (parallel version here).
Photograph credit: Franz van Duns
Source: https://en.wikipedia.org/wiki/Template:POTD/2021-11-01
This video was auto generated using data and media from Wikipedia.
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https://www.youtube.com/watch?v=UOYviDySEjw
Astronomy Picture of the Day - September 22nd, 2020 - Equinox in the Sky (Narrated by Amy)
Does the Sun set in the same direction every day? No, the direction of sunset depends on the time of the year. Although the Sun always sets approximately toward the west, on an equinox like today the Sun sets directly toward the west. After today's September equinox, the Sun will set increasingly toward the southwest, reaching its maximum displacement at the December solstice. Before today's September equinox, the Sun had set toward the northwest, reaching its maximum displacement at the June solstice. The featured time-lapse image shows seven bands of the Sun setting one day each month from 2019 December through 2020 June. These image sequences were taken from Alberta, Canada -- well north of the Earth's equator -- and feature the city of Edmonton in the foreground. The middle band shows the Sun setting during the last equinox -- in March. From this location, the Sun will set along this same equinox band again today.
Image Credit & Copyright: Luca Vanzella
Source: https://apod.nasa.gov/apod/ap200922.html
This video was auto generated using data from NASA Open API.
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https://www.youtube.com/watch?v=dLGmA4xDchQ
Astronomy Picture of the Day - August 9th, 2021 - Perseus and the Lost Meteors (Narrated by Emma)
What's the best way to watch a meteor shower? This question might come up later this week when the annual Perseid Meteor Shower peaks. One thing that is helpful is a dark sky, as demonstrated in the featured composite image of last year's Perseids. Many more faint meteors are visible on the left image, taken through a very dark sky in Slovakia, than on the right image, taken through a moderately dark sky in the Czech Republic. The band of the Milky Way Galaxy bridges the two coordinated images, while the meteor shower radiant in the constellation of Perseus is clearly visible on the left. In sum, many faint meteors are lost through a bright sky. Light pollution is shrinking areas across our Earth with dark skies, although inexpensive ways to combat this might be implemented. Notable Perseids Submissions to APOD: 2018, 2019, 2020
Image Credit & Copyright: Tomas SlovinskySlovakiaPetr HoralekCzech RepublicInstitute of Physics in Opava
Source: https://apod.nasa.gov/apod/ap210809.html
This video was auto generated using data from NASA Open API.
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https://www.youtube.com/watch?v=JeWQh6Ls9Bk
Wikipedia Picture of the Day - March 5th, 2024 - Dyeing poison dart frog (Narrated by Salli)
The dyeing poison dart frog (Dendrobates tinctorius) is a species of poison dart frog. It is among the largest species, reaching lengths of 50 millimetres (2.0 in). It is distributed throughout the eastern portion of the Guiana Shield, including parts of French Guiana, Guyana, Suriname and Brazil. This dyeing poison dart frog was photographed in the Karlsruhe Zoo in Germany.
Photograph credit: H. Zell
Source: https://en.wikipedia.org/wiki/Template:POTD/2024-03-05
This video was auto generated using data and media from Wikipedia.
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https://www.youtube.com/watch?v=NzPaOiHuvA0
Wikipedia Picture of the Day - February 23rd, 2021 - Phenakistiscope (Narrated by Salli)
The phenakistiscope was the first widespread animation device that created a fluent illusion of motion. A series of pictures showing sequential phases of the animation are seen through small slots spaced evenly around the rim of a disc. The user would spin the disc and look through the moving slits at the images reflected in a mirror, seeing a rapid succession of images that appear to be a single moving picture. This animation shows one such phenakistiscope disc, entitled Running rats, created by Thomas Mann Baynes in 1833.
Illustration credit: Thomas Mann Baynes; animated by Basile Morin
Source: https://en.wikipedia.org/wiki/Template:POTD/2021-02-23
This video was auto generated using data and media from Wikipedia.
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https://www.youtube.com/watch?v=e2zGExpDpkY
Astronomy Picture of the Day - August 3rd, 2022 - Halo of the Cat's Eye (Narrated by Salli)
What created the unusual halo around the Cat's Eye nebula? No one is sure. What is sure is that the Cat's Eye Nebula (NGC 6543) is one of the best known planetary nebulae on the sky. Although haunting symmetries are seen in the bright central region, this image was taken to feature its intricately structured outer halo, which spans over three light-years across. Planetary nebulae have long been appreciated as a final phase in the life of a Sun-like star. Only recently however, have some planetaries been found to have expansive halos, likely formed from material shrugged off during earlier puzzling episodes in the star's evolution. While the planetary nebula phase is thought to last for around 10,000 years, astronomers estimate the age of the outer filamentary portions of the Cat's Eye Nebula's halo to be 50,000 to 90,000 years.
Image Credit & Copyright: Bray Falls
Source: https://apod.nasa.gov/apod/ap220803.html
This video was auto generated using data from NASA Open API.
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https://www.youtube.com/watch?v=YVHbvzeXfE0