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Scientists discover cause of the hottest known temperature on Earth

The hottest known temperature on Earth was caused by an ancient asteroid strike. Researchers in Australia and London have used the presence of cubic zirconia to infer the temperature at an asteroid impact site in Newfoundland, Canada. Their findings suggest that, for a brief time, the temperature at the point of impact exceeded 4,300 degrees F. This is roughly half the temperature of the surface of our Sun. The findings speak to the conditions on Earth during the Late Bombardment Period, when asteroids struck the planet with great regularity. Violent events would eventually contribute to the establishment of habitable conditions on Earth.
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