How We Know What's Deep Inside the Earth, Despite Never Traveling

The extreme conditions of inner Earth make it impossible to explore. But seismic waves during earthquakes, volcanic eruptions and light waves from the Sun all have helped reveal fascinating insights about our planet’s mantle, crust, and core.
The extreme conditions of inner Earth make it impossible to explore. But seismic waves during earthquakes, volcanic eruptions and light waves from the Sun all have helped reveal fascinating insights about our planet’s mantle, crust, and core.

Earth's Magnetosphere: Protecting Our Planet from Harmful Space Energy

How do scientists know what is deep inside the Earth despite never travelling there? - Quora

Drilling Deep: How Far Have We Gone Under Earth's Crust?

Earth's mantle: what's going on deep beneath our feet? - Curious

Earth's Interior Structure, Overview & Evidences - Lesson

geography - What is the deepest we have ever gone into the Earth? - Earth Science Stack Exchange

What's Actually Inside the Earth's Core?

Earth's Interior National Geographic

New hidden world' discovered in Earth's inner core

3 new planets could host life

New Evidence for Oceans of Water Deep in the Earth

What causes earthquakes? - British Geological Survey