Q: I was looking at a fist-sized rock at a flea market; the owner called it a meteorite. It seemed large, especially for the small price. A woman shopper overhead the conversation and told me that the ...

A large meteorite can launch bits of molten rock into the atmosphere when it impacts Earth. When that molten rock cools, it forms tektites, shown here. Photo by Robert Eastman / Alamy Stock Photo The ...

Scattered thinly over the earth’s surface are large patches of tektites—glassy lumps up to several inches across, of mysterious and probably unearthly origin. In Britain’s Nature, American Chemist ...

Tektite from China with regmaglypts, structures created by melting and ablation while falling in Earth's atmosphere. Around 790,000 years ago, a large meteorite hit Earth. It is the most recent of ...

WITH reference to Dr. L. J. Spencer's letter in NATURE of October 7, p. 571, on the origin of tektites, the strongest argument against his suggestion that they were formed by the fusion of terrestrial ...

https://siris-libraries.si.edu/ipac20/ipac.jsp?&profile=liball&source=~!silibraries&uri=full=3100001~!953864~!0#focus ...

Mineral Monday is a weekly video series exploring the many amazing minerals, fossils, and historic objects on display at the W.M. Keck Earth Science and Mineral Engineering Museum as told by museum ...

THE suggestion first made in NATURE (131, 117; 1933) by Dr. L. J. Spencer that tektites have been formed by the fusion of terrestrial rocks by the fall of very large meteorites has given rise to an ...