Does the mass of earth decreasing or increasing? If so, how many grams per year?
The mass of the earth increases by about 7300 TONNES per year due to meteors and debris hitting it. That’s 7.3 thousand million grams per year! About 20 tonnes per day. Note: a tonne is 1000kg and is roughly the same weight as a US ton. EDIT: And now I’m turning that answer on its head, because Glenn’s question and some more reasearch leads me to belive that around 30,000 tonnes of atmosphere just wander off into space each year. Therefore the Earth is on a diet, rather than a space binge.
