The Temperature Changed
They had underestimated how quickly the temperature would rise. By the time they got close to the target, the temperature in the hole had reached 180 °C (356 °F). This is an incredible 80 degrees Celsius (176 degrees Fahrenheit) hotter than they had anticipated!
The Temperature Changed
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There Was More
That wasn’t the end of it. Furthermore, the researchers discovered that the rock at those depths was much less dense than they had previously assumed. As a result, it reacted to the higher temperatures in a variety of ways. Completely catching them off guard.
There Was More