These giant mountain-sized boulders from space have wrought death and destruction throughout the millennia but until recently geologists could find no evidence that they had actually struck the earth, in Season 1, Episode 10, "Asteroids." #HowTheEarthWasMade
Subscribe for more from How the Earth Was Made and other great HISTORY shows:
http://histv.co/SubscribeHistoryYT

Watch more How the Earth Was Made on YouTube in this playlist:
https://www.youtube.com/playlist?list=PLob1mZcVWOajq6oVD_f2I2-gPZk4zvN7S

Check out exclusive HISTORY content:
History Newsletter - https://histv.co/newsletter
Website - https://histv.co/History
Facebook - https://histv.co/Facebook
Twitter - https://histv.co/Twitter

HISTORY goes to the ends of the earth to find where our world began. Forged from fire and ice, formed by floods, volcanoes, asteroids and earthquakes, our planet tells a dynamic geological story. What are mega-tsunamis? What happens when you have millions of years of rain? Visual effects, location filming and stunning aerial photography bring viewers back 4.5 billion years to enjoy a unique window on our world. How the Earth Was Made peels back time like layers of rock to reveal the origins of the place we call home.

HISTORY® is the leading destination for award-winning original series and specials that connect viewers with history in an informative, immersive, and entertaining manner across all platforms. The network’s all-original programming slate features a roster of hit series, premium documentaries, and scripted event programming.