IT’S not just the nature of dark matter that’s a mystery – even its abundance is inexplicable. But if our universe is just one of many possible universes, at least this conundrum can be explained.(1)
Indeed. It’s a conundrum for an anti-design perspective. From an ID and theological perspective, it’s not surprising that even the quantity of this material points to design. The notion from the anti-design perspective is that “common sense doesn’t work.” Fine. Sometimes it doesn’t. But, I don’t think people even have to rely on “common sense” to support a design perspective. You can rely on logic, philosophy, and scientific reasoning to support a design perspective. It just happens that these perspectives can also correspond with “common sense.” The same cannot be said for an anti-design perspective.
The total amount of dark matter – the unseen stuff thought to make up most of the mass of the universe – is five to six times that of normal matter. This difference sounds pretty significant, but it could have been much greater, because the two types of matter probably formed via radically different processes shortly after the big bang. The fact that the ratio is so conducive to a life-bearing universe “looks like a tremendous coincidence”, says Raphael Bousso at the University of California, Berkeley.
It does look like a “tremendous coincidence.” Thankfully, purely naturalistic scientists have an out. Of course it can’t be verified. Of course it can’t be measured. But it doesn’t start with a “g” or even a “G.” Therefore, it makes rational sense, and is science.
Freivogel focused on one of the favoured candidate-particles for dark matter, the axion. Axions have the right characteristics to be dark matter, but for one problem: a certain property called its “misalignment angle”, which would have affected the amount of dark matter produced in the early universe. If this property is randomly determined, in most cases it would result in a severe overabundance of dark matter, leading to a universe without the large-scale structure of clusters of galaxies. To result in our universe, it has to be just the right value.
In a multiverse, each universe will have a random value for the axion’s misalignment angle, giving some universes the right amount of dark matter needed to give rise to galaxies, stars, planets and life as we know it.
Praise Science that they have an alternative explanation. “So what?” if it is unmeasurable, untestable, and unfalsifiable. It doesn’t involve any kind of “G” word (a scientific explicative). It sounds good, and appeals to Science Fiction; therefore, it’s science.