# Dinosaur urine

**URL:** <https://boards.straightdope.com/t/dinosaur-urine/761834>\
**Category:** Cecil's Columns/Staff Reports\
**Created:** [August 5, 2016, 12:49pm UTC](https://boards.straightdope.com/t/dinosaur-urine/761834 "2016-08-05T12:49:09Z")\
**Posts on this page:** 1\
**Page:** 2

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**Author:** ![eastcheap](https://avatars.discourse-cdn.com/v4/letter/e/8491ac/32.png) [@eastcheap](https://boards.straightdope.com/u/eastcheap)\
**Post date:** [August 10, 2016, 9:31pm UTC](https://boards.straightdope.com/t/dinosaur-urine/761834/21 "2016-08-10T21:31:09Z")

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> [@Blue\_Blistering\_Barnacle](#):
>
> Snowballs from space!
> 
> [http://articles.chicagotribune.com/1997-05-29/news/9705290201\_1\_earth-planet-snowballs](http://articles.chicagotribune.com/1997-05-29/news/9705290201_1_earth-planet-snowballs)
> 
> These are supposed to deliver about 1/2 inch - 1 inch of planetary water per 10K years.
> 
> This would also go nicely in that thread about “theories that go from woo to scientific acceptance”.

Water is also formed in interplanetary silicate dust particles courtesy of the solar wind (hydrogen bombardment), though I haven’t seen any estimates as to quantity deposited on Earth. Moreover, there’s a growing consensus that much, if not most, terrestrial water originated in asteroids, which appear to have a lot more water than they were previously credited with.

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