Saturday, May 21, 2011

Einstein's Biggest Blunder

Jack Dikian
May 2011

A team of planetary scientists using the Anglo-Australian Telescope contributed to the mapping of galaxies over a volume of the Universe and has shown that dark energy responsible for expanding the universe is real and not a mistake by Einstein viz a viz the cosmological constant.

When George Gamow was discussing cosmological problems with Einstein, he (Einstein) had remarked that the introduction of the cosmological term was the biggest blunder of his life.

Einstein introduced his cosmological constant it into his general theory of relativity almost as a last resort wanting to force his theory to yield a static universe as he had thought the universe to be.

We know now the universe is not static and is expanding at an accelerating rate, just as his original field equations were predicting. Einstein was never comfortable with the [constant] and a clue is in his 1917 paper which ends with

“It is to be emphasized, however, that a positive curvature of space is given by our results, even if the supplementary term [cosmological constant] is not introduced. That term is necessary only for the purpose of making possible a quasi-static distribution of matter, as required by the fact of the small velocities of the stars”.

The survey of 200,000 galaxies by an international team, led by Chris Blake of Swinburne University, took four years to complete, aimed to measure the properties of "dark energy" — the concept of which was revived in the late 1990s when astronomers began to realize the universe was expanding at an accelerating rate.

The acceleration was a shocking discovery, indicating the universe is filled with a new kind of energy that is causing it to expand at an increasing speed.


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