What’s going on with Earth’s core? Neil deGrasse Tyson and comedian Chuck Nice give an astrophysicist’s take on reports that the Earth’s core is slowing. Find out how planets are formed and what the composition of the Earth’s interior is.

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. What is a dynamo? Plus, what happens when Earth’s magnetic field flips? Is it dangerous?

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About StarTalk:
Science meets pop culture on StarTalk! Astrophysicist & Hayden Planetarium director Neil deGrasse Tyson, his comic cohosts, guest celebrities & scientists discuss astronomy, physics, and everything else about life in the universe. Keep Looking Up!

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00:00 How the Earth formed
05:50 Earth’s Core
08:00 How do we know what’s at the center of the Earth?
10:30 Magnetic Field
12:29 Earth’s Cycle & our Magnetic Dynamo