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Stay tuned: New star coming in 1 million years



 
 
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  #1  
Old December 24th 09, 10:58 PM posted to sci.astro.amateur
mta
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Posts: 12
Default Stay tuned: New star coming in 1 million years

At what point does a sun ignite? Is it a slow process or does it light up
at once?
What is the minimum density required for a solar mass size star to ignite?
Why don't
stars unravel or become unstable in the early part of their life? JUST WTF
is it all about Alfie???



"Chris L Peterson" wrote in message
...
On Thu, 24 Dec 2009 08:48:15 -0500, "sunspot" wrote:

while I can often appreciate these posts, I find that very often the
contents within are pure speculation with no true science involved


And how does that apply to this particular paper? It appears highly
scientific and not at all speculative. We have well developed theories
of stellar formation which predict an early stage where dust and gas
condense out of large clouds into dense zones, and this report discusses
actual observations of such a process. That's about as close to ideal
science as you can get.
_________________________________________________

Chris L Peterson
Cloudbait Observatory
http://www.cloudbait.com



  #2  
Old December 25th 09, 12:20 AM posted to sci.astro.amateur
Chris L Peterson
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Posts: 10,007
Default Stay tuned: New star coming in 1 million years

On Thu, 24 Dec 2009 22:58:46 GMT, "mta" wrote:

At what point does a sun ignite? Is it a slow process or does it light up
at once?
What is the minimum density required for a solar mass size star to ignite?
Why don't
stars unravel or become unstable in the early part of their life?


All that stuff is pretty well understood, and described in hundreds or
thousands of papers. Stars ignite rapidly. The minimum density is
similar to the Sun's density. Why would a protostar become unstable?
_________________________________________________

Chris L Peterson
Cloudbait Observatory
http://www.cloudbait.com
  #3  
Old December 25th 09, 04:36 PM posted to sci.astro.amateur
mta
external usenet poster
 
Posts: 12
Default Stay tuned: New star coming in 1 million years

It takes a million years or so for photons to break through the surface of
the sun. The light and heat we experience were created a million years ago.
When the sun first lit up how much of the core was affected to instantly
become helium ash and steadily build up over billions of years?



"Chris L Peterson" wrote in message
...
On Thu, 24 Dec 2009 22:58:46 GMT, "mta" wrote:

At what point does a sun ignite? Is it a slow process or does it light up
at once?
What is the minimum density required for a solar mass size star to ignite?
Why don't
stars unravel or become unstable in the early part of their life?


All that stuff is pretty well understood, and described in hundreds or
thousands of papers. Stars ignite rapidly. The minimum density is
similar to the Sun's density. Why would a protostar become unstable?
_________________________________________________

Chris L Peterson
Cloudbait Observatory
http://www.cloudbait.com



  #4  
Old December 25th 09, 04:51 AM posted to sci.astro.amateur
jerry warner[_26_]
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Posts: 243
Default Stay tuned: New star coming in 1 million years



sunspot wrote:

while I can often appreciate these posts, I find that very often the
contents within are pure speculation with no true science involved


thats easy - dont read the posts. Go back to NatGeo
and Nancy Grace.




i could also make up a fantasy and post it saying it will happen in xxx
years

whos to say my fantasy wouldnt come true if there was a bit of evidence
currently to support it

there is also plenty of evidence to not support my fantasy--- was there any
point it telling my fantasy in the first place?

no attack of the messenger here as he simply relays info published
elsewhere, but much of what i read is a true stretch at best with little or
no evidence to support it

i think i will start publishing my most outlandish fantasies

"Sam Wormley" wrote in message
news



Stay tuned: New star coming in 1 million years
http://www.sciencenews.org/view/gene..._million_years
Radio observations of a dark, dusty cloud in a nearby star-forming region
have revealed one of the earliest phases of star formation and may reveal
new insights on starbirth.


 




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