i saw that too Had a verry different response it seemed to make sense mathematically. they said how much water an asteroid contained and described many hitting the earth. i just wondred about if heat was generated did it melt the ice or could it have vaporized any water? earth at the time had a weak atmosphere(question) to protect it? where would the water vapor go? I hope i can catch it again to look further.
posted by yichel
over 2 years ago
Not often...but I agree with yichel.
Don't think they said it was the only source for water.
What are the forms that grow in the tidal pools? They contributed to the atmosphere over millions of years.
I understood it as spaces "within" meteorites not just "on" them?
I'll try to see it again as well.
This is one reason the timeline is so critial.
posted by wot53
over 2 years ago
They did not say it was the only source of water and they also calculated that if all meteorites has as much water as some rocky meteorites contain, sea levels would be a ~100 feet higher (exaggeration) than they are today.
Scott, geologists can say we some certainty it only took millions of years. Study some geology and you can go out in the field and see it for yourself.
Yichel, watch the documentary and they'll explain several theories where the water vapor went.
LLL...
What are the forms that grow in the tidal pools?....That contributed to the atmosphere?
They look like large mushrooms??? maybe in the coral family?
Forgot the name.
posted by wot53
over 2 years ago
Did they utilize the terms, "possibly", "probably" or "maybe" very often during the documentary? I'm sure they must have.
All that I saw so far was an advertisement for the show.
If it hasn't been on yet, I'll be watching my guide for a time and channel.
The important thing to know is that water is everywhere. Currently, we are awaiting confirmation that organic life exists on Waterworld, officially known as Gliese 581 d. It is 8 times the size of Earth, but it's all water, even at its core. On a site where Matt Hansel and I are running a graphic strip of a girl on Waterworld, someone this morning said it was "Alice in wonderland."
As we learn about more and more planets orbiting other stars, we are certain to find multitudes of "wonderlands." It's past time for us to have new and strange places to think about.
Oxygen in the form of O2 is produced from water by cyanobacteria, algae and plants during photosynthesis. Oxygen is toxic to obligately anaerobic organisms, which were the dominant form of early life on Earth until O2 began to accumulate in the atmosphere 2.5 billion years ago.
How do we "possibly", "probably" or "maybe" konow Scott? Not only do we have their fossils from that long ago, they are still alive today.
You can pick'em up and dry'em, then put'em in your pipe and smok'em.
Nice ocean aroma.
So then that begs the question: Did all that water that makes up that planet, that being ONLY water, come from meteorites hitting it? Or was it just THERE? We'll never really know will we?
