Correction for the weight of The Earth
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How heavy is 40,000 tonnes?
It's about 0.000000000000000007 times as heavy as The Earth
The weight of The Earth is about 5,973,600,000,000,000,000,000.000000000000000000000000000 tonnes.
The mass of the planet Earth is 5,973,600,000,000,000,000,000 (5.973 sextillion) tonnes. The element iron makes up about 32% of that mass, or 1,917,500,000,000,000,000,000 (1.917 sextillion) tonnes.