10 Surprising Facts About: Planet Earth: Home to 7.2 Billion people planet Earth is a 5 billion year old ball of Iron, Oxygen, Silicon, Magnesium, and other trace elements, hurtling through space at 67,000 mph. Earth is a rather incredible place to be, here’s some of the most extreme facts about the planet you live […]
Tag: Planet (Celestial Object Category)
Why Does The Earth Have Layers?
…or why do we live on an onion made of magma? Viewers like you help make PBS (Thank you ?) . Support your local PBS Member Station here: Subscribe to It’s Okay To Be Smart: Thanks to Miles Traer and Mike Osborne for geophysics help on this one! Why does Earth have a liquid core, […]