When an asteroid smashes into the Earth things get pretty toasty.
A 17 mile-wide crater in Canada was home to what scientists say is the hottest temperature ever recorded in Earth’s crustal rock, a whopping 4,300 degrees Fahrenheit. They didn’t just stick a thermometer in there, of course, the crater is some 36 million years old. Instead, researchers from Curtin University in Australia looked to the rocks.
Embedded in the crater walls were crystals of cubic zirconia, a mineral that