It was far more dangerous than the 1908 impact at Tunguszka.

A group of scientists led by scientists at the University of Kent found traces of an ancient meteorite impact on the Antarctic ice sheet 430,000 years ago.

Alien particles (condensation spheres) have been found in the Sor Rondane Mountains in the Walnumfjellet Mountains in Queen Maud Land. Its presence indicates an unusual impact event in which an asteroid of at least 100 meters collided at high speed, resulting in the formation of molten and evaporated meteorite material.

This is called a medium-type impact because it is larger than an air blast but smaller than a crater-generating event, writes the science portal EurekAlert.com.

The chondrite composition, chemical properties, and high nickel content of the debris suggest that it is a material from outside the Earth. The specific oxygen isotopes of the particles found suggest that it interacted with oxygen in the Antarctic ice at the time of impact.

According to the results, the event was much more dangerous than the impact of a meteorite in 1908 in Tunguszka and in 2013 in Chelyabinsk.

The experts reported their findings in the scientific journal Science Advances.

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