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They also estimate that about 95,000 tonnes of hydrogen gas are lost from Earth’s atmosphere into space each year. Although other processes are involved, such as the loss of mass due to radioactive decay within the Earth’s core (about 160 tons per year), and the loss of helium from the atmosphere (about 1,600 tons per year), these are of little effect.
Because every year, according to the Science Focus page, the amount of mass that is launched into Earth’s orbit is negligible in comparison, around several hundred tons. Therefore, conservative estimates imply that the Earth loses about 50,000 tons of mass every year.
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Sounds a lot. However, because the Earth’s mass is around 5.97 billion trillion tonnes, it would take about 120,000 trillion years to completely disappear at this rate of depletion. That means millions of times the age of the Earth.
In fact, this is a million times the age of the Universe! So this loss of mass has no effect on planet Earth – or on humans. So Earth creatures, especially humans, don’t have to worry about the reduction in the mass of this planet every year.
(wsb)
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