Topic: Geology/Meteorites

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๐Ÿ”— Wanggongchang Explosion

๐Ÿ”— Military history ๐Ÿ”— Disaster management ๐Ÿ”— Death ๐Ÿ”— China/Chinese history ๐Ÿ”— China ๐Ÿ”— Astronomy ๐Ÿ”— Geology ๐Ÿ”— Military history/Asian military history ๐Ÿ”— Geology/Meteorites ๐Ÿ”— Military history/Chinese military history ๐Ÿ”— Explosives ๐Ÿ”— Astronomy/Solar System

The Wanggongchang Explosion (Chinese: ็Ž‹ๆญๅป ๅคง็ˆ†็‚ธ), also known as the Great Tianqi Explosion (ๅคฉๅ•Ÿๅคง็ˆ†็‚ธ), Wanggongchang Calamity (็Ž‹ๆญๅป ไน‹่ฎŠ) or Beijing Explosive Incident in Late Ming (ๆ™šๆ˜ŽๅŒ—ไบฌ็ˆ†็‚ธไบ‹ไปถ), was an unexplained catastrophic explosion that occurred on May 30 of the Chinese calendar in 1626 AD during the late reign of Tianqi Emperor, at the heavily populated Ming China capital Beijing, and had reportedly killed around 20,000 people. The nature of the explosion is still unclear to this day, as it is estimated to have released energy equivalent to about 10-20 kiloton of TNT, similar to that of the Hiroshima bombing.

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๐Ÿ”— Tell HN: Perseids: "Last Chance" for Best Meteor Viewing Tonight

๐Ÿ”— Astronomy ๐Ÿ”— Geology ๐Ÿ”— Geology/Meteorites ๐Ÿ”— Solar System

The Perseids are a prolific meteor shower associated with the comet Swiftโ€“Tuttle. The meteors are called the Perseids because the point from which they appear to hail (called the radiant) lies in the constellation Perseus.

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๐Ÿ”— Thokcha (Meteorite Amulets)

๐Ÿ”— Geology ๐Ÿ”— Geology/Meteorites

Thokcha (Tibetan: เฝเฝผเฝ‚เผ‹เฝฃเพ•เฝ‚เฝฆ, Wylie: thog lcags; also alternatively Tibetan: เฝ‚เฝ“เฝ˜เผ‹เฝฃเพ•เฝ‚เฝฆ, Wylie: gnam lcags) are tektites and meteorites which serve as amulets. Typically high in iron content, these are traditionally believed to contain a magical, protective power comparable to Tibetan dzi beads. Most thokcha are made of a copper alloy.

The use of meteoric iron has been common throughout the history of ferrous metallurgy. Historically, thokcha were prized for the metallurgical fabrication of weapons, musical instruments, and sacred tools, such as the phurba. Thokcha are an auspicious addition in the metallurgical fabrication of sacred objects cast from panchaloha.

Writer Robert Beer regards meteoric iron as "the supreme substance for forging the physical representation of the vajra or other iron weapons." It was believed that these amulets had been tempered by the celestial gods before falling to Earth. Beer describes the metal falling from space as a metaphor for "the indivisibility of form and emptiness." Many meteorite fragments can be found in Tibet due to its high altitude and open landscape.

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