by harry » Sun May 07, 2006 3:00 am
Hello All
News flash. Sydney Morning Herald.
quote:
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"London: The universe we live in may not be the only one but just the latest in a line of repeating big bangs stretching back through time, according to the latest theory from cosmologists.
Instead of being formed from a single big bang about 14 billion years ago destined to expand and eventually peter out to the cold, dead remains of stars, the universe may be an endless loop of explosions and contractions stretching forever.
The latest theory has been postulated to account for what Einstein described as his biggest Blunder"", the cosmological constant, a number linking energy and space, which he proposed to account for the galaxies being driven apart."
Physcists have since than measured the number as too small.
The constant is a mathematical representaion of the nergy of empty space, known as dark energy, which exerts a kind of anti-gravity, pushing galaxies apart at an accelerating rate. It hapens to be a googol(1 followed by 100 zeros) times smaller than would be expected if the universe was created in a single big bang.
According to the new theory, published yesterday in the journal Science, the discrepancy can be explained if the universe itself is billions of years older and fashioned from cyclical big bangs.
people have infered that time began then, but there really wasn't a reason for that infrernce, said Neil Turok, a theoretical physcist at Cambridge University in Britain. " what we are proposing is very radical. Its saying there was time before the Big Bang".
There doesn't have to be a beginning of time, Professor Turok said. According to our theory, the universe may be infinitely old and infinetly large".
If this theory is right, how long have we got until the next big bang?
Professor Turok said " We can't predict when it will happen with any precision- all we can say is it won't be within the next 10 billion years".
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I just read it and thought to post it.
Hello All
News flash. Sydney Morning Herald.
quote:
------------------------------------------------------------------------
"London: The universe we live in may not be the only one but just the latest in a line of repeating big bangs stretching back through time, according to the latest theory from cosmologists.
Instead of being formed from a single big bang about 14 billion years ago destined to expand and eventually peter out to the cold, dead remains of stars, the universe may be an endless loop of explosions and contractions stretching forever.
The latest theory has been postulated to account for what Einstein described as his biggest Blunder"", the cosmological constant, a number linking energy and space, which he proposed to account for the galaxies being driven apart."
Physcists have since than measured the number as too small.
The constant is a mathematical representaion of the nergy of empty space, known as dark energy, which exerts a kind of anti-gravity, pushing galaxies apart at an accelerating rate. It hapens to be a googol(1 followed by 100 zeros) times smaller than would be expected if the universe was created in a single big bang.
According to the new theory, published yesterday in the journal Science, the discrepancy can be explained if the universe itself is billions of years older and fashioned from cyclical big bangs.
people have infered that time began then, but there really wasn't a reason for that infrernce, said Neil Turok, a theoretical physcist at Cambridge University in Britain. " what we are proposing is very radical. Its saying there was time before the Big Bang".
There doesn't have to be a beginning of time, Professor Turok said. According to our theory, the universe may be infinitely old and infinetly large".
If this theory is right, how long have we got until the next big bang?
Professor Turok said " We can't predict when it will happen with any precision- all we can say is it won't be within the next 10 billion years".
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I just read it and thought to post it.