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"For more than 60 years, these lamellar structures have served as an indicator of an asteroid impact, but no one knew until now how this structure was formed in the first place," Liermann says. "We have now solved this decades-old mystery."To do so, the researchers had spent years modifying and advancing techniques that allow materials to be studied under high pressure in the lab. In these experiments, samples are usually compressed between two small diamond anvils in a so-called diamond anvil cell (DAC). It allows extreme pressures - as prevalent in Earth's interior or in an asteroid impact - to be generated in a controlled manner.
After examining multiple reports, NASA released a statement Thursday that confirmed a meteoroid made entry near McAllen around 1800 ET.Good question. British astronomer Victor Clube articulated the perfect answer:
"NASA experts believe the object was a meteoroid about two feet in diameter weighing about 1,000 pounds," a statement from the space agency read. [...]
We have one question: Why didn't planetary defense systems monitor the meteoroid, especially since it was a 1,000-pound chunk of space rock? Or was the military's radar system too busy chasing balloons?
"We do not need the celestial threat to disguise Cold War intentions; rather we need the Cold War to disguise celestial intentions!"
~ British astronomer Victor Clube, author of The Cosmic Serpent and The Cosmic Winter, in a report commissioned by the U.S. Air Force
Comment: Videos below of this terrible beauty as it burned up over northwestern Europe: