What is the Earth's core?

Have you ever wondered what would happen if you dug a hole straight down through your backyard? You wouldn't just find dirt! Join Mira and Finn on an epic journey deep underground to discover the amazing, blistering secrets hiding right beneath our feet! First, we’ll explore the bubbling, oozing hot rock called magma, and find out exactly what happens when it blasts out of a volcano and turns into lava. Did you know the deepest hole humans ever dug had to stop because the rock turned into hot, sticky putty? It's true! But the wildest part is right at the very center of the planet. Discover a giant, swirling ocean of liquid metal and a solid iron ball that is literally as hot as the surface of the sun! Plus, find out how a brilliant scientist named Inge Lehmann used cardboard oatmeal boxes and earthquake waves to prove it was all there. You'll even learn how this giant iron center acts like an invisible superhero force field to keep everyone on Earth safe!