We live in a dramatic epoch of astrophysics.
Breakthrough discoveries like exoplanets, gravitational waves from merging black holes, or cosmic acceleration seem to arrive every decade, or even more often.
It is not often you are offered a chance to become E=mc²
Dark matter is thought to represent 80% of the matter of the universe, but its nature remains unknown.
Here is a helping hand.
Regular’ matter – the stuff we can see and that makes up stars, planets, rocks, gas clouds and dust – only accounts for a small fraction of the total mass in our Universe. Scientists call this ‘regular’ matter baryonic matter, so-called because it is made up of particles called baryons.
Carl Sagan popularized the notion that we are all made of star stuff.
While dark energy is a hypothetical form of energy that permeates all of space and tends to increase the rate of expansion of the universe. Dark energy is the most popular way to explain recent observations that the universe appears to be expanding at an accelerating rate.
The Universe is constantly expanding with neutron star merging forming Galaxies consisted predominantly of matter. It changes, creating new structures that merge while space itself does not change, it is said to be static, while time goes on.
Dark matter is all around us but no one knows what dark matter actually is.
For decades, physicists have been working on the theory that dark matter is light and therefore interacts weakly with ordinary matter. It might come in two flavors, matter and anti-matter, that annihilate and emit high energy radiation when coming into contact.
Dark matter is thought to be the gravitational “glue” that binds the galaxies together.
5% the universe consists of known material such as atoms and subatomic particles.
The rest of the universe is believed to consist of dark energy.
The vast majority of the dark matter in the universe is believed to be non baryonic, which means that it contains no atoms and that it does not interact with ordinary matter via electromagnetic forces.
In astronomy and cosmology, dark matter is hypothetical matter that is undetectable by its emitted radiation, but whose presence can be inferred from gravitational effects on visible matter.
Dark energy is believed to be responsible for the current rate of the expansion of the Universe.
Despite all their initiatives no dark particle has yet been detected.
It could be that we are looking in the wrong place.
Now I am no physicist but maybe dark matter is of a different character and needs to be looked for in a different way.
This is where you come in as the philosophy of physics needs to change.
The universe may have existed forever long before the Big Bang.
However in general relativity, one possible fate of the universe is that it starts to shrink until it collapses in on itself in a big crunch and becomes an infinitely dense point once again.
This to my simple mind seems (as with the infinite expansion of the Universe) this is codswallop. Even if the universe is filled with a quantum fluid it must have come from somewhere. ( Quantum Physics is probabilistic and for the most part confined to the scale of atoms.) You have to ask where did the fluid come from. Not to mention that Maths can explain only what happened immediately after—not at or before—the singularity or the Big Bang.
The nature of the dark matter predicted by inflation is a profound and unresolved puzzle.
The problem appears to be that the further you go into Space there are no longer any gravitationally bound objects and that all that is expanding is being held together by Dark Matter.
There are currently two choices.
Either the dark matter consists of ordinary, baryonic matter, or else it consists of some more exotic form of matter.
But most dark matter could not be baryonic, what other forms could it take?
It’s not a Vibration of one Universe rubbing against another. This could be measures.
It’s not a MACHO which is a body composed of normal baryonic matter that emits little or no radiation and drifts through interstellar space unassociated with any planetary system.
It’s not a Magnetic field. This can be measures.
It is invisible. This is actually why we can’t see it.
Is it a weak nuclear force. There must be many dark matter particles passing through the Earth all the time.
The neutrino is assumed to be practically massless, but a finite mass is not implausible.
There are so many neutrinos left over from the big bang.
We know how much dark energy there is because we know how it affects the Universe’s expansion.
This diagram reveals changes in the rate of expansion since the universe’s birth 15 billion years ago. The more shallow the curve, the faster the rate of expansion. The curve changes noticeably about 7.5 billion years ago, when objects in the universe began flying apart as a faster rate. Astronomers theorize that the faster expansion rate is due to a mysterious, dark force that is pulling galaxies apart.
More is unknown than is known. Other than that, it is a complete mystery.
What could the dark matter be?
Important as dark matter is believed to be in the universe, direct evidence of its existence and a concrete understanding of its nature have remained elusive.
Hot Dark Matter (HDM), Warm Dark Matter (WDM), and Cold Dark Matter (CDM); some combination of these is also possible.
All suggestions as the where or what to look for at welcome.
I would mention that we are all aware of the God Particle.