Re: Star formation


"Sjouke Burry" <burrynulnulfour@xxxxxxxxxxxxxxxxxx> wrote in message
news:43fcc0c5$0$2016$ba620dc5@xxxxxxxxxxxxxxxxxxxxxx
John Brockbank wrote:
Sorry if this is an FAQ, but it5 has long made me wonder and I have never
seen an explanation.
The Earth massive as it is, is too slight to have hydrogen in the
atmosphere. I think that is because the speed of the molecules exceeds,
just about, the escape velocity. Given that, how did stars form from
hydrogen?
Surface gravity at the sun 27 G?(260 /s/s)
And that is for a yellow dwarf.
Even Jupiter/Saturn/neptune hold onto their
hydrogen pretty well.

Of course once a star has formed it has a strong gravity field. However,
presumably a vary large volume of hydrogen, having a huge mass, in fact will
have a low gravitational force because it is spread out (inverse square
law).
Sorry, but I do not think this is a no-brainer.


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