If you visit the right piece of desert along the border between Libya and Egypt, you may come across pale yellow broken glass, the traces of a meteorite impact 29 million years ago
] Of this glass, one of which remarkable piece was used in jewelry found in King Tut's grave has long been claimed to have heavenly roots. It is also the subject of a new study that states that the so-called Libyan desert glass was probably created by a meteorite impact and not by a space rock puff. If the research persists, it suggests that scientists investigating the asteroid threat that collide with Earth may not be so worried about the consequences of exploding rocks from the great Have to make space.
Both meteorite impacts and blasts of air can melt, "said lead author Aaron Cavosie, a geologist at Curtin University, Australia, in a statement (1
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They knew it was great whether or not the glassmaking rocks touched the ground, but Cavosie and his co-author wanted to know if the culprit was an impact or an air blast They worked with seven bright yellow pieces of glass and looked at them under a high-performance scanning microscope, and they were able to take a close look at zircon crystals in the glass, which develop slightly different structures, depending on what has happened to them over the millennia.
This analysis suggested that some of the zirconium crystals were present once reiditic, a mineral that is only found under very specific high pressure conditions that coincide with what happens when a meteorite hits the earth, but not when such a space rock explodes in the air. (In an e-mail to Space.com, Cavosie added that while the scientists did not detect a crater that would respond to the collision, there is a lot of sand in the area that has such a structure under the dunes
Cavosie and his co-author hope this is good news for planetary defense experts, focusing on the danger of asteroids colliding with Earth and how humans can protect us. This is because after the air blast over Chelyabinsk, Russia, in 2013 people feared that the Libyan desert glass would have formed during a much larger air blast Libyan Desert Glass, this scenario is off the table. Combine this with the fact that geologists have found no evidence of relatively new non-friction glass specimens, and the results suggest that even massive air blasts do not have as serious a impact on the soil as some had feared.
] The research is described in an article published on May 2 in the journal Geology.