<s>[INST] How heavy is the earth? [/INST] Earth has a mass of about 5.9722×10^24 kg.</s>\ <s>[INST] Cool. How can the earth's mass be measured? [/INST] Using Newton's Law of Gravitation we can mesure the gravitational force exerced by the earth on objects, after what using mathematical relations it is then easy to deduce the earth's mass.</s>