Âm thanh chia sẻ

“Scientists once drilled the deepest hole on Earth… but suddenly they stopped.” In 1970, Soviet scientists started a project called Kola Superdeep Borehole. Their goal was simple: to drill deeper than anyone had ever gone before. After years of drilling… they reached more than 12 kilometers undergr…

“Scientists once drilled the deepest hole on Earth… but suddenly they stopped.” In 1970, Soviet scientists started a project called Kola Superdeep Borehole. Their goal was simple: to drill deeper than anyone had ever gone before. After years of drilling… they reached more than 12 kilometers underground. That’s deeper than Mount Everest is tall. But something unexpected happened. The temperature underground reached almost 180°C… hot enough to destroy their equipment. So the project was abandoned