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John Doe

Learn English, gain knowledge or just relax by listening to random Wikipedia Articles. This is a project that is fully automated using Python and Google's Text-2-Speech API. read less
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Episodios

S1E135 - Rings of Jupiter
12-10-2023
S1E135 - Rings of Jupiter
The planet Jupiter has a system of faint planetary rings. The Jovian rings were the third ring system to be discovered in the Solar System, after those of Saturn and Uranus. The main ring was discovered in 1979 by the Voyager 1 space probe and the system was more thoroughly investigated in the 1990s by the Galileo orbiter. The main ring has also been observed by the Hubble Space Telescope and from Earth for several years. Ground-based observation of the rings requires the largest available telescopes.The Jovian ring system is faint and consists mainly of dust. It has four main components: a thick inner torus of particles known as the "halo ring"; a relatively bright, exceptionally thin "main ring"; and two wide, thick and faint outer "gossamer rings", named for the moons of whose material they are composed: Amalthea and Thebe.The main and halo rings consist of dust ejected from the moons Metis, Adrastea and perhaps smaller, unobserved bodies as the result of high-velocity impacts. High-resolution images obtained in February and March 2007 by the New Horizons spacecraft revealed a rich fine structure in the main ring.In visible and near-infrared light, the rings have a reddish color, except the halo ring, which is neutral or blue in color. The size of the dust in the rings varies, but the cross-sectional area is greatest for nonspherical particles of radius about 15 μm in all rings except the halo. The halo ring is probably dominated by submicrometre dust. The total mass of the ring system (including unresolved parent bodies) is poorly constrained, but is probably in the range of 1011 to 1016 kg. The age of the ring system is also not known, but it is possible that it has existed since the formation of Jupiter.A ring or ring arc appears to exist close to the moon Himalia's orbit. One explanation is that a small moon recently crashed into Himalia and the force of the impact ejected the material that forms the ring. Source: https://en.wikipedia.org/wiki/Rings_of_Jupiter License: Creative Commons Attribution-ShareAlike License 3.0;
S1E125 - Mantra-Rock Dance
06-10-2023
S1E125 - Mantra-Rock Dance
The Mantra-Rock Dance was a counterculture music event held on January 29, 1967, at the Avalon Ballroom in San Francisco. It was organized by followers of the International Society for Krishna Consciousness (ISKCON) as an opportunity for its founder, A. C. Bhaktivedanta Swami Prabhupada, to address a wider public. It was also a promotional and fundraising effort for their first center on the West Coast of the United States.The Mantra-Rock Dance featured some of the most prominent Californian rock groups of the time, such as the Grateful Dead and Big Brother and the Holding Company with Janis Joplin, as well as the then relatively unknown Moby Grape. The bands agreed to appear with Prabhupada and to perform for free; the proceeds were donated to the local Hare Krishna temple. The participation of countercultural leaders considerably boosted the event's popularity; among them were the poet Allen Ginsberg, who led the singing of the Hare Krishna mantra onstage along with Prabhupada, and LSD promoters Timothy Leary and Augustus Owsley Stanley III.The Mantra-Rock Dance concert was later called "the ultimate high" and "the major spiritual event of the San Francisco hippie era." It led to favorable media exposures for Prabhupada and his followers, and brought the Hare Krishna movement to the wider attention of the American public. The 40th anniversary of the Mantra-Rock Dance was commemorated in 2007 in Berkeley, California. Source: https://en.wikipedia.org/wiki/Mantra-Rock_Dance License: Creative Commons Attribution-ShareAlike License 3.0;