In science theory and experiment play a game of leapfrog. When a theory becomes well-supported, it makes predictions that give guidance to experimenters. Often enough experimenters find data that the theories didn’t predict, which leads to modifications of the theory or even the creation of new theories. Sometimes data leads (as in current quantum mechanics) and some times theory leads. And they change place from time to time, subtopic to subtopic.
But sometimes theories capture the imaginations of scientists who then, either ignore conflicting data or pound square pegs into round holes in the theory and go “See? It works.”
Take this case. Around 1960, some engineers discovered an annoying background hiss in their communication network and none of their efforts removed or reduced it. To make a long story short, they had discovered what has been called the Cosmic Microwave Background Radiation (hereafter CMBR). Yes, microwaves, the same radiation that reheats lasagna in your microwave oven. The proponents of the Big Bang Theory (hereafter BBT) jumped upon this discovery as evidence for the “big Bang” part of their theory. They claimed this was residue from the initial “explosion” of the universe. Right? They are still claiming that the CMBR is evidence supporting the BBT.
But pump your brakes a bit, Bucky. They left out a few details.
Did you know that there is a background radiation all over the electromagnetic spectrum? For every bit of that spectrum, those backgrounds are attributed to be from starlight, either through direct emission or through re-radiation by dust. Well, every bit of that spectrum except the microwave part, that had its source in the BB. Right . . . ?
But the BBT predicted there would be such a microwave background, no? Yes, it did, except that it predicted microwaves from a source that was 50+K in temperature. The CMBR’s source is around 3K, so the BBT’s prediction was “off” by a factor of 17.
Also, were you aware that prior to the emergence of the BBT, a number of predictions of a CMBR were made? Calculations way back in the 1930’s found that ambient starlight would settle to an equilibrium temperature of 2.8K, all without the need a “primordial fireball.” Basically those calculations were based upon light from stars bouncing around the universe, being absorbed by molecules and dust particles which would reduce the light’s wavelengths associated with a source of about 3K, which is basically then, the average temperature of the space of the universe.
(An Aside If you are unaware, the radiation the a body emits is based upon its temperature. You may have seen infrared cameras used on home improvement shows to show heat leaks from houses and that human beings show up on those camera images because we have a temperature that emits infrared light.)
So, this cornerstone of the BBT, the CMBR, wasn’t predicted by the BBT theory (it predicted a source much hotter) but was predicted by normal physics to be exactly as it is.
There are more difficulties. The BBT predicts the CMBR will be even in all directions, it is not, it has a definite “axis” buried in the data.
All of the other background radiations were explained using the same physics as the physics that gave the correct temperature for the CMBR, but that didn’t fit the BBT, so that explanation was dumped over the one that (poorly) supported the BBT.
There are obvious other problems. According to the BBT, the entire universe was dark for its first 300,000 years. Then space cleared up and light began to shine around. The CMBR is supposedly this light giving us a photo representation of the universe at age 300,000 years. But what was the source of this light? Remember the BBT proponents go to lengths to declare there was no explosion, just a rapid expansion of space, so no “flash” from the very beginning is claimed. According to the BBT the light of the CMBR had the same source we see now, nuclear fusion occurring in stars producing star light. (Note we now have Webb Telescope images from back at the supposed 300,000 year point and galaxies were seen, and galaxies can only be collections of stars, so stars had been shining during at least some of that 300,000 year period, but the light couldn’t escape the dust and gas. So, why would this source appear to be 3K now, instead of the tens of thousands of degrees that stars put out now? Oh, the expansion of space-time stretched out that light over the billions of years to make it longer, and voilà microwaves. Obvious, isn’t it?
Remember Ockham’s Razor, the principle that we shouldn’t multiply entities beyond necessity? Which do you think most closely aligns to that principle with regard to the CMBR: the BBT or ordinary physics?
“The pretense of knowledge is our most dangerous vice, because it prevents us from getting any better.”