View Full Version : Getting a Handle on How Much Cosmic Dust Hits Earth

2012-Mar-30, 08:30 PM
Does Earth have a dust build-up problem? Estimates vary of how much cosmic dust and meteorites enter Earthís atmosphere each day, but range anywhere from 5 to 300 metric tons, with estimates made from satellite data and extrapolations of meteorite falls. Thing is, no one really knows for sure and so far there hasnít been [...]

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2012-Apr-01, 06:59 PM
Like sweeping the ocean back with a broom.