3 ms·
12 km to be precise, of the earth’s 6000 odd km radius. That’s all we could accomplish in entire human history. https://www.smithsonianmag.com/smithsonian-inst
by girishso 7y ago
12 km to be precise, of the earth’s 6000 odd km radius. That’s all we could accomplish in entire human history.
https://www.smithsonianmag.com/smithsonian-institution/ask-smithsonian-whats-deepest-hole-ever-dug-180954349/ https://www.smithsonianmag.com/smithsonian-institution/ask-s...