Naked Science Forum

General Discussion & Feedback => Just Chat! => Topic started by: JnA on 14/12/2008 22:42:09

Title: Chris said...
Post by: JnA on 14/12/2008 22:42:09
that the earth is 'collecting' debris from space all the time (I agree that this probably happens), then he goes on to say that you can see this by putting a clean white sheet out on your back lawn and then return later and you'll see black specs all over the sheet.


How does this prove that it is space dirt and not just earth from Earth?

I heard him say it more than once, though it may have been ages ago I listen to old podcasts a lot...


Title: Chris said...
Post by: Don_1 on 15/12/2008 09:17:09
Because of the 'spaces' between the specs???!!!
Title: Chris said...
Post by: Make it Lady on 15/12/2008 17:35:46
Air pollution, not space dirt. That is my conclusion.
Title: Chris said...
Post by: JimBob on 15/12/2008 18:36:07
Actually, the majority of space debris is water, all from small-sized water meteorites - at least that is my current understanding of the subject.
Title: Chris said...
Post by: Make it Lady on 15/12/2008 18:42:34
So rain is space debris?
Title: Chris said...
Post by: JimBob on 15/12/2008 19:12:48
No, only a very small part of it is.
Title: Chris said...
Post by: Make it Lady on 15/12/2008 21:47:38
Which part?
Title: Chris said...
Post by: dentstudent on 16/12/2008 07:41:22
Actually, the majority of space debris is water, all from small-sized water meteorites - at least that is my current understanding of the subject.

Isn't this were most of the earth's water came from in the first place? From various comets hitting the earth?
Title: Chris said...
Post by: JimBob on 16/12/2008 17:51:01
Actually, the majority of space debris is water, all from small-sized water meteorites - at least that is my current understanding of the subject.

Isn't this were most of the earth's water came from in the first place? From various comets hitting the earth?

This is the leading theory: Accretionary Earth.  But there are nay-sayers in every subject.

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