I gather "dark matter" is pretty mysterious, even to astrophysicists. Dark matter emits no radiation but can be detected by its gravitational effect on stars and such. Dark matter is inferred from the rotation of galaxies. It is said to make up some 25 percent of the critical density of the universe.
Even more perplexing to me is dark energy, which is said to make up some 70 percent of the critical density of the universe. Unlike dark matter (which seems to “clump”), dark energy is diffused throughout the universe. It has a negative pressure — a force acting in opposition to positive gravity. In other words, it has a force that accelerates the expansion of the universe.
Do the math: That leaves "ordinary" matter -- the stuff we know, or think we know -- at something like 5% of the critical density of the universe.
Is it any wonder these "light universe" theories are gaining ground?...
The stuff my human brain can concieve of and my physical body senses and can sense or recognize.. call it LIGHT energy/matter.. is stuff we can see and measure(touch).. in this Universe..
I prefer designated(Light) energy/matter and UNdesignated(Dark) energy/matter.. Would also be an answer for God and where the Universe came from.. If "God" can designate energy/matter.. and also UNdesignate/remodel it.. Makeing and UNmakeing matter(Light matter) might really be an easy thing to a Spirit/spirit with the proper abilities.. What appears to be "SPACE" might in reality be an vast ocean of UNdesignated energy/matter..
Ya think?.. Could make "heaven" and "hell" cool places.. with degrees of each..
The Standard Model suggests that ordinary matter appears as the Higgs field/boson - but so far neither Fermilab nor CERN have been able to create or observe the Higgs. And obviously dark matter and dark energy cannot be observed in laboratory conditions either - so the whole issue of mass has many exciting mysteries for up and coming Physicists.
Naturally, my interest is drawn to the geometric theories. Among these is that dark energy may be a space/time "outdent" - or negative gravity - the reverse of a space/time "indent" or positive gravity. Another is that mass in 4 dimensions may be shadows of momentum components in a 5th dimension. Another that particles in 4 dimensions may be multiply imaged from as little as a single particle in a 5th dimension.
All very fascinating...
Indeed swirling galaxys in an ocean of what?.. Dark energy?, matter?... both?..
Light energy/matter?... Dark energy/matter?..
Could be space is NOT empty..
But a coriolis effect seems to be universally present.. Its true on this planet that the coriolis effect turns one way in the northen hemisphere and revolves the other way in the southern.. maybe all we see is a part of the universe and that the universe is not expanding but revolving..
What a state of affairs when even what we think "is material" may not be.. since "we" don't know what material even is.. Material might be designated energy and energy is just matter undesignated.. like water(STEAM) and ice..