Is 400,000,000 tonnes as heavy as The Sun?
It's about 0.0000000000000000002 times as heavy as The Sun
The weight of The Sun is about 2,000,000,000,000,000,026,575,110,144.000000000000000000000000000000 tonnes.
The sun has a mass of 2,000,000,000,000,000,000,000,000,000 (2 octillion) tonnes which represents 99.9% of the solar system's total mass. 98.7% of the sun's mass consists of hydrogen and helium — respectively the lightest and second-lightest elements in the universe.
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