What is the outer core made of? Astronomy Our Solar System The Earth 1 Answer Suryin =) Jan 23, 2016 Liquid Iron and Nickel Explanation: It is about #2,300# km thick equivalent to #1,300# miles as you can see in the picture. It is located between the inner core and mantle. http://extension.illinois.edu/earth/09.cfm?ID=09 Answer link Related questions What's the Earth's "absolute" speed? i.e. in relation to the central Sun, the first-order star,... How does density affect earth's layers? How fast does the earth rotate? How does this compare to the rotation of other planets? At what speed does the earth travel on its orbit around the sun? What would happen if the earth's rotation was faster or slower? How fast does earth rotate near the equator? How fast does the earth rotate per second? How fast is the earth traveling along its orbit? How fast does the earth rotate on its axis? How fast does the earth rotate in one minute? What is the formula to determine this? See all questions in The Earth Impact of this question 7951 views around the world You can reuse this answer Creative Commons License