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Earth Asteroid Impacts Mirrored on Moon – Including the Dinosaur Killer - SciTechDaily

Earth Asteroid Impacts Mirrored on Moon – Including the Dinosaur Killer - SciTechDaily

Earth Asteroid Impacts Mirrored on Moon – Including the Dinosaur Killer - SciTechDaily
Sep 29, 2022 2 mins, 17 secs

Scientists have found asteroid impacts on the Moon millions of years ago coincided precisely with some of the largest meteorite impacts on Earth, such as the one that wiped out the dinosaurs.

Additionally, the new research study also discovered that major impact events on Earth were not stand-alone events, but were accompanied by a series of smaller impacts.

Led by Curtin University, the international research team studied microscopic glass beads aged up to two billion years old that were discovered in lunar soil that was brought back to Earth in December 2020 as part of the Chinese National Space Agency’s Chang’e-5 Lunar mission.

Because the heat and pressure of meteorite impacts created the glass beads, their age distribution should mimic the impacts, revealing a timeline of bombardments.

According to lead author Professor Alexander Nemchin, from Curtin University’s Space Science and Technology Centre (SSTC) in the School of Earth and Planetary Sciences, the findings suggest that the timing and frequency of asteroid impacts on the Moon may have been mirrored on Earth, telling us more about the history of the evolution of our own planet.

“We combined a wide range of microscopic analytical techniques, numerical modeling, and geological surveys to determine how these microscopic glass beads from the Moon were formed and when,” Professor Nemchin said.

“We found that some of the age groups of the lunar glass beads coincide precisely with the ages of some of the largest terrestrial impact crater events, including the Chicxulub impact crater responsible for the dinosaur extinction event.

“The study also found that large impact events on Earth such as the Chicxulub crater 66 million years ago could have been accompanied by a number of smaller impacts.

If this is correct, it suggests that the age-frequency distributions of impacts on the Moon might provide valuable information about the impacts on the Earth or inner solar system.”.

“The next step would be to compare the data gleaned from these Chang’e-5 samples with other lunar soils and crater ages to be able to uncover other significant Moon-wide impact events which might in turn reveal new evidence about what impacts may have affected life on Earth,” Associate Professor Miljkovic said.

Reference: “Constraining the formation and transport of lunar impact glasses using the ages and chemical compositions of Chang’e-5 glass beads” by Tao Long, Yuqi Qian, Marc D.

Every crater on the Moon is a circle.

So… if it is from an impact, the projectile would have had to strike the Moon at 90°.

Also: The side of the Moon, that is always facing the Earth has only circular craters?

Did the projectile swing around the Earth, then straighten up before the impact.

The World’s largest impact crater

Are all impact craters on Earth circular


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