Things You Thought You Knew – Earth’s Spinning Core

About This Episode

What happens if Earth’s core is slowing? Neil deGrasse Tyson and comedian Chuck Nice explore the spinning of Earth’s core, the physics of tire pressure, and the science of toast.

Discover protoplanets and the early formation of our Earth. What does the center of the Earth look like? How do we know what it looks like? Learn about seismometers and how Earth creates its magnetic field. Find out how planets are formed and what the composition of the Earth’s interior is. What is a dynamo? Plus, what happens when Earth’s magnetic field flips? Is it dangerous?

How much does air weigh? Is there still air in an empty tire? Find out how tire pressure works and how much air you need to put into a tire to hold up Neil. Why do bikes have thin tires and tractors have big ones? Discover how there’s math in everything…

Ever thought long and hard about your toaster? No? Now is your chance. What takes toast so long to brown? Why does it burn so easily? Learn about how to boil water in a paper cup, air frying, and how to make the perfect piece of toast. Discover the thermodynamics of toasting and more with your personal astrophysicist.

Thanks to our Patrons Gaija, Kyann McMillie, Brett Moorman, Craig Landon, and Ms. Gordon for supporting us this week.

NOTE: StarTalk+ Patrons can watch or listen to this entire episode commercial-free.