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These meteorites landed on Earth after a 22-million-year voyage


These meteorites landed on Earth after a 22-million-year voyage
For the first time, scientists have been able to precisely map the flight path of an asteroid that landed on Earth and trace it back to its point of origin. The boulder-size fragment’s journey to our planet began 22 million years ago, according to new research.
The asteroid, known as 2018 LA, appeared like a fireball in the skies over Botswana on June 2, 2018, before breaking apart and landing in the Central Kalahari Game Reserve.
Prior to breaking up in Earth’s atmosphere, scientists determined that the asteroid was about 5 feet (1.7 meters) in diameter, weighed 12,566 pounds and had been traveling at 37,282 miles per hour. ....

South Africa , Peter Brown , Motopi Pan , Mohutsiwa Gabadirwe , Christian Wolf , Peter Jenniskens , Hadrien Devillepoix , Vesta Veneneia , Eric Christensen , Christopher Onken , Lesedi Seitshiro , Department Of National Museum , Botswana International University Of Science , Botswana Department Of Wildlife , Meteor Group , Australian National University Research School Of Astronomy , University Of Arizona Catalina Sky , Catalina Sky , Curtin University , Canada Research , Ames Research Center , National Parks , Botswana Geoscience Institute , Central Kalahari Game , Australian National University , Research School ,

Scientists retrace asteroid's trip to Earth from Vesta


Scientists retrace asteroid s trip to Earth from Vesta
CNN
1 hr ago
By Ashley Strickland, CNN
© Peter Jenniskens/SETI Institute
This fragment of asteroid 2018 LA was recovered from the Central Kalahari Game Reserve in central Botswana.
For the first time, scientists have been able to precisely map the flight path of an asteroid that landed on Earth and trace it back to its point of origin. The boulder-size fragment s journey to our planet began 22 million years ago, according to new research.
© NASA/JPL-Caltech/UCAL/MPS/DLR/IDA
NASA s Dawn spacecraft studied the giant asteroid Vesta from July 2011 to September 2012.
The asteroid, known as 2018 LA, appeared like a fireball in the skies over Botswana on June 2, 2018, before breaking apart and landing in the Central Kalahari Game Reserve. ....

South Africa , Peter Brown , Motopi Pan , Mohutsiwa Gabadirwe , Christian Wolf , Peter Jenniskens , Hadrien Devillepoix , Vesta Veneneia , Eric Christensen , Christopher Onken , Lesedi Seitshiro , Department Of National Museum , Australian National University , Botswana International University Of Science , Botswana Department Of Wildlife , Meteor Group , Australian National University Research School Of Astronomy , University Of Arizona Catalina Sky , Catalina Sky , Curtin University , Canada Research , Ames Research Center , National Parks , Botswana Geoscience Institute , Central Kalahari Game Reserve , Central Kalahari Game ,

It took 22 million years for these meteorites to land on Earth


It took 22 million years for these meteorites to land on Earth
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Updated: 12:04 PM EDT Apr 28, 2021
By Ashley Strickland
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Updated: 12:04 PM EDT Apr 28, 2021
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Uh huh. When a meteorite strikes, earth scientists think it might create an unexpected mineral. At the impact site, scientists found it may alter minerals where it crashed and create an unusual form of silica. A team led by a Carnegie Institute for Science researcher examined the crystal structure of the silicon mineral courts under shock compression. They mimicked a meteorite impact in a lab with a cannon light gas gun to accelerate projectiles into court samples faster than a bullet. They used X ray tools to figure out the crystal structure of material right after impact and found that courts undergoes a transition into a new crystalline structure. However, once the intense pressure subsides, it can t last. This challe ....

South Africa , Peter Brown , Motopi Pan , Mohutsiwa Gabadirwe , Christian Wolf , Peter Jenniskens , Hadrien Devillepoix , Vesta Veneneia , Eric Christensen , Christopher Onken , Lesedi Seitshiro , Department Of National Museum , Botswana International University Of Science , Botswana Department Of Wildlife , Meteor Group , Australian National University Research School Of Astronomy , University Of Arizona Catalina Sky , Catalina Sky , Curtin University , Canada Research , Ames Research Center , National Parks , Botswana Geoscience Institute , Central Kalahari Game Reserve Prior , Australian National University , Research School ,