Posts Tagged ‘Dark Energy’
This powerful Camera is in a high Plateau in Chile.
‘The most powerful sky-mapping instrument ever built is about to embark on a far-reaching survey of deepest space to find evidence of the theoretical force called Dark Energy. From a high plateau in Chile, the Dark Energy Camera is being pointed billions of light years into the cosmos in an effort by astronomers to answer questions about Dark Energy’s influence over the expansion of our universe. Elly Park reports.’
In a Study, typical of Science’s arrogance and inability to accept any thing that they can not understand have come out with a statement that Time will come to a stand still one day.
This fallacy is due to the blind acceptance of the Linear Theory of Time.
The Cyclic Theory which has been propounded by Indian Philosophy and indications that it might be the correct interpretations of Time by Quantum Theory(please read my blog Time, a non-linear theory),Scientist refuse to accept this.
Scientists statement is born of the conviction that they will not be around to question them.
Ever had that feeling that there aren’t enough hours in the day?
Well one day, there won’t be any hours in the day, or minutes, or even nano-seconds – because according to scientists, time will eventually, in billions of years, come to a standstill.
The rate at which it’s slowing, though, is imperceptible to humans.
The mind-bending theory, published in the Physical Review D journal, comes courtesy of researchers from the University of the Basque Country and the University of Salamanca, led by Professor Jose Senovilla.
Their theory, according to The Daily Telegraph, is an alternative explanation for observations from astronomers that the universe is expanding at an ever-accelerating rate.
The most widely accepted theory is that an unidentified force called ‘dark energy’ is forcing galaxies apart.
But Professor Senovilla claims dark energy just doesn’t exist.
He reckons that the acceleration is an illusion caused by time slowing down and making everything appear to move apart more and more quickly.
He said: “We do not say that the expansion of the universe itself is an illusion. What we say may be an illusion is the acceleration of this expansion – that is, the possibility that the expansion is, and has been, increasing its rate.”
Eventually, time will simply stop, he argues.
He told New Scientist: “Then everything will be frozen, like a snapshot of one instant, forever. Our planet will be long gone by then.”
Tweets on this.
Einstein need not be called wrong at this stage.
When two bodies are repelling each other , the explanation could also be that another Force might be pulling each of the objects in different directions.
Like Space,Gravity has no directions.
It is only a frame of reference.
A five-year survey of 200,000 galaxies, stretching back seven billion years in cosmic time, has led to one of the best independent confirmations that dark energy is driving our universe apart at accelerating speeds. …
The findings offer new support for the favored theory of how dark energy works – as a constant force, uniformly affecting the universe and propelling its runaway expansion. They contradict an alternate theory, where gravity, not dark energy, is the force pushing space apart. According to this alternate theory, with which the new survey results are not consistent, Albert Einstein’s concept of gravity is wrong, and gravity becomes repulsive instead of attractive when acting at great distances.
“The action of dark energy is as if you threw a ball up in the air, and it kept speeding upward into the sky faster and faster,” said Chris Blake of the Swinburne University of Technology in Melbourne, Australia. Blake is lead author of two papers describing the results that appeared in recent issues of the Monthly Notices of the Royal Astronomical Society. “The results tell us that dark energy is a cosmological constant, as Einstein proposed. If gravity were the culprit, then we wouldn’t be seeing these constant effects of dark energy throughout time.”
Dark energy is thought to dominate our universe, making up about 74 percent of it. Dark matter, a slightly less mysterious substance, accounts for 22 percent. So-called normal matter, anything with atoms, or the stuff that makes up living creatures, planets and stars, is only approximately four percent of the cosmos.
The idea of dark energy was proposed during the previous decade, based on studies of distant exploding stars called supernovae. Supernovae emit constant, measurable light, making them so-called “standard candles,” which allows calculation of their distance from Earth. Observations revealed dark energy was flinging the objects out at accelerating speeds.