Thunderbolts Forum v3.0

COSMIC SNOWBALLS DETECTED PELTING EARTH'S ATMOSPHERE
By Kathy Sawyer
May 29, 1997

Earth is bathed by a steady "cosmic rain" from previously undetected objects from outer space that pour vast quantities of water into the atmosphere, according to startling new evidence released today.

The objects, 20- to 40-ton snowballs the size of two-bedroom houses, streak into the atmosphere by the thousands each day, disintegrate harmlessly 600 to 15,000 miles up and deposit large clouds of water vapor that eventually fall on Earth's surface as rain, according to Louis A. Frank of the University of Iowa. He led the research team that for the first time has captured images of these objects.

https://www.washingtonpost.com/archive/politics/1997/05/29/cosmic-snowballs-detected-pelting-earths-atmosphere/fa300386-d3d5-4215-80b2-460f4bedaf9c/

[quote=Maol post_id=5596 time=1629847430 user_id=7143]
If so, how much?

Perhaps in particular the dense ribbon of comet dust known as "the Perseid Filament."
[/quote]
An obvious "cutoff" would be the mass of the comet itself, but in reality it's much smaller, of course.
So a short answer is: negligibly little - in comparison to the mass of the oceans at least.

If so, how much?

Perhaps in particular the dense ribbon of comet dust known as "the Perseid Filament."