000 000 000 000 000 910 938 22 kg. In scientific notation, this is written 9.109 382 2 × 10 -31 kg. The Earth 's mass is about 5,973,600,000,000,000,000,000,000 kg. In scientific notation, this is written 5.9736 × 10 24 kg . The Earth's circumference is approximately 40,000,000 m. In scientific