age of sun
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Rathnakumar
Jun 14, 2010, 12:57:54 AM6/14/10
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what are the reasons for us to believe that the sun is halfway through
its lifetime?
its lifetime?
Pradeep Ch
Jun 14, 2010, 1:05:54 AM6/14/10
to sci-...@googlegroups.com, s.rathn...@gmail.com
Age of sun is obtained from indirect evidence.
The evidence is the Earth itself.
Scientists studied the rocks, fossils and different layers of the Earth to estimate the age.
It is also known that Earth formed around sun almost at the same time as sun formed.
So, age of the Sun is just greater than the age of the Earth (which is about 4.5 billion years and this happened to be Sun's middle age.)
(Knowing the mass of the star, luminosity and other factors... we can estimate the age of the star)
Regards
Pradeep Ch.
--
Never do anything against conscience even if the state demands it.
The evidence is the Earth itself.
Scientists studied the rocks, fossils and different layers of the Earth to estimate the age.
It is also known that Earth formed around sun almost at the same time as sun formed.
So, age of the Sun is just greater than the age of the Earth (which is about 4.5 billion years and this happened to be Sun's middle age.)
(Knowing the mass of the star, luminosity and other factors... we can estimate the age of the star)
Regards
Pradeep Ch.
On Mon, Jun 14, 2010 at 10:27 AM, Rathnakumar <s.rathn...@gmail.com> wrote:
what are the reasons for us to believe that the sun is halfway through
its lifetime?
Never do anything against conscience even if the state demands it.
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