Ep. 221: Geomorphology

When we look around our planet, we see a huge variety in landforms: mountains, valleys, plateaus, and more. Continents rise and fall over the eons, providing geologists with a history of the planet’s evolution. The study of these changes is known as geomorphology, and the lessons we learn here on Earth apply to the other objects in the Solar System.

Ep. 142: Plate Tectonics

The surface of the Earth feels solid under your feet, but you’re actually standing on a plate of the Earth’s crust. And that plate is slowly shifting across the surface of the Earth. Over geologic timescales, plate tectonics has totally resurfaced our planet, bringing continents together, and tearing them apart. We know we have plate tectonics here on Earth, but what about other worlds?

Ep. 141: Volcanoes, Hot and Cold

You’re familiar with volcanoes, eruptive vents where hot magma escapes the Earth’s interior – sometimes with disastrous effects. But did you know that volcanoes have shaped many of the planets and moons in the Solar System, not just our own Earth? And just in the last few years astronomers have discovered there are cold volcanoes on some of the icy objects in the outer solar system.

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