The universe is expanding more rapidly, not less. An accelerating universe forces us to re-examine all our theories of its origin.
Accelerating universe – discovery
Drs. Saul Perlmutter, Brian Schmidt, and Adam Riess, among others, discovered the accelerating universe in 1998. They saw that large objects closer to earth moved faster than objects farther away. They showed this by studying Type Ia supernovae, the closest thing to a “standard candle” in all the universe. For this, Drs. Perlmutter, Schmidt, and Riess won the 2011 Nobel Prize for Physics.
In an interview appearing today at National Public Radio, Perlmutter discussed his find, and what it means. His find obviously shocked him: he compared it to
throwing the apple up in the air and seeing it blast off into space.
The universe has four elemental forces (gravity, electro-magnetism, and the strong and weak nuclear forces). Only gravity acts at long range. Gravity attracts; it does not repel. Ever since the publication of the Big Bang theory, astronomers and cosmologists have always expected the universe to slow down from gravity. The only debate in those days was whether the universe would:
- Slow down to a certain speed but no slower than that (an open universe).
- Slow down to an almost, but never complete, stop (a flat universe).
- Slow down, stop, and fall back on itself (a closed universe).
Albert Einstein realized early that his famous field equations, from his General Theory of Relativity, predicted an open universe from then-current observation. Einstein fought that interpretation, but eventually accepted it.
No one expected an accelerating universe.
Or did they?
Moshe Carmeli predicts an accelerating universe
Dr. Moshe Carmeli, in 1996, was the Albert Einstein Professor of Theoretical Physics at Ben Gurion University, Beer Sheva, Israel. He predicted that Einstein’s grand theory needed revision to deal with the entire universe. General relativity is suitable on local scales, like that of our solar system. It does not take into account the scale of an expanding universe.
Carmeli worked out his own solutions to Einstein’s field equations. He first realized that the universe was not only open, but accelerating. Two years later, Perlmutter, Schmidt, and Riess would discover that fact for themselves.
Cosmological relativity treats cosmic time, the time that the universe needs to expand from zero size. It also considers the mass density of the universe. Cosmological relativity does not assume that the universe would decelerate. Instead, the universe would expand either at a constant rate, a slowing (and perhaps reversing) rate, or an accelerating rate. A mass density less than one predicts an accelerating universe.
Trying to explain an accelerating universe
An accelerating universe leads to two possibilities:
- Something is pushing the universe apart, something that works against gravity and is stronger than gravity.
- Einstein’s general relativity is incomplete.
Perlmutter supports the first option above. He talks freely of “dark energy,” the common name for this unseen force pushing the universe apart. If dark energy exists, then three-quarters of the mass-energy of the universe consists of dark energy. But even Perlmutter admits that no one has any idea of what “dark energy” is all about.
At this point, I think there’s been a paper averaging almost every day for the past 12 years with theorists of physics trying out different ideas for what could be the explanation. If you ask almost any of them, “Do you stand behind your theory? Is this the answer?” I think almost everyone would say, “No, no, no. I’m just trying to expand the range of possibilities.” We really don’t know what’s going on.
That leaves the second option: that Einstein’s theory is incomplete and does not apply on a cosmic scale. Perlmutter clearly does not want to believe that. But he does admit that this could be correct.
Perlmutter notes that Einstein’s theory has been correct to great precision. Thus any theory that could agree with Einstein on a local scale just as well, would be “amazing.” But in fact, cosmological relativity is a general case, of which Einstein’s relativity is a special case. Relativity itself is a general case of Newton’s laws of motion. Sir Isaac Newton worked out laws of motion and energy on the normal, human scale. Einstein worked out these laws on the scale of much greater speeds. Carmeli, and John Hartnett after him, worked out laws on the scale of an expanding universe. Each succeeding theory kept the last as a special case.
More to the point: dark energy need not exist under cosmological relativity. Dark energy is a “fudge,” like the prediction of a planet inside Mercury to explain why Mercury’s orbit accelerated slightly with every close pass at the sun. Einstein shows that no such inner planet (or asteroid belt) need exist, and the Mariner and MESSENGER probes never found any such object(s). Dark energy will also fail from lack of evidence.
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Terry A. Hurlbut has been a student of politics, philosophy, and science for more than 35 years. He is a graduate of Yale College and has served as a physician-level laboratory administrator in a 250-bed community hospital. He also is a serious student of the Bible, is conversant in its two primary original languages, and has followed the creation-science movement closely since 1993.
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