What does the earths core do for our planet? Astronomy Our Solar System The Earth 1 Answer Peter Feb 12, 2016 Answer: It keeps us alive. Explanation: That may sound a bit rude, but the fact is, the earth's core is responsible for the geo-magnetic field we rely upon to deflect harmful radiation away from us. 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 102 views around the world You can reuse this answer Creative Commons License