Is the Earth's core solid, liquid, or gas? - Quora

Answer (1 of 7): The outer core (between ~1220 km to ~3400 km from the Earth’s center) is theorized to be liquid, while the inner core (less than 1220 km from the center) is solid. This is based on seismic data, where the inner ore has been observed to reflect seismic waves.

Is there any fourth state of matter other than solid, liquid, and gas? - Quora

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How close to the Earth's core have we been? - Quora

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Does the sun have a physical core? - Quora

What is the major difference between the inner core and the outer core? - Quora

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Why is the inner core solid, the outer core liquid, and the mantle solid/plastic? - Quora

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What is the inner core made of? - Quora

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