Will dead stars get so dim we never see them again?

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@drugsworker

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@drugsworker asked the Naked Scientists:
   
If  light we see from planets that died millions of years ago when will they dim out so we'll never see there light again?

What do you think?
« Last Edit: 08/07/2011 21:01:02 by _system »

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Offline Mr. Data

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Will dead stars get so dim we never see them again?
« Reply #1 on: 08/07/2011 19:53:58 »
@drugsworker asked the Naked Scientists:
   
If  light we see from planets that died millions of years ago when will they dim out so we'll never see there light again?

What do you think?

If their light is only just reaching us, then I'd imagine it will take the same amount of time for light to reach us initially before we see any dimming. That is many billions of lightyears.

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Offline Kryptid

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Will dead stars get so dim we never see them again?
« Reply #2 on: 08/07/2011 21:53:15 »
If you're interested in what may occur in the extreme future of our Universe, you may want to look here: http://www.fathom.com/course/10701055/session3.html
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Offline yor_on

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Will dead stars get so dim we never see them again?
« Reply #3 on: 09/07/2011 00:33:14 »
"If  light we see from planets that died millions of years ago when will they dim out so we'll never see there light again?"

Well, I would say it is when you can't see them anymore. That's when they 'died', as far as you're concerned. And, that's the whole truth about it :) The rest is a comparison between 'frames of reference' building on the invariant speed of light in a vacuum, distance, space expansion, relative motion and redshift (Doppler and relativistic)
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