Maybe dark matter is a type of unknown, unnamed gas!
2007-08-18 09:03:32 · 7 answers · asked by kriend 7 in Science & Mathematics ➔ Physics
Scientists calculate that 90% of the the mass of the univevrse is composed of matter that reflects no light, hence the term 'Dark Matter', it could be composed of sub atomic particles like neutrinos which is thought to have almost no mass. They believe that the continuing expansion of the universe is happening because of this missing mass, they have now proposed the possible existance of Dark Emergy to explain the expansion.
2007-08-22 05:21:55 · answer #1 · answered by johnandeileen2000 7 · 0⤊ 0⤋
If it's a gas composed of any element known, we should be able to identify it by either absorption or emission spectra, since all elements have electrons that interact with light. It ain't there. So, recognizing that the term "gas" just relates to a phase, and that it almost certainly is not a liquid or solid, it likely exists in a gaseous or plasma state. The big question is what is IT. Some unknown type of elementary particle seems the best candidate at present (WIMP).
The fun (though unlikely) possibility for me is that we are staring some fundamental new understanding of gravity in the face and just can't recognize it yet.
2007-08-18 11:38:08 · answer #2 · answered by SAN 5 · 0⤊ 0⤋
I think the answer might be simpler. Perhaps the dark matter galaxies are reqions of space with unusually high concentrations of heavy elements (say lithium or carbon on up combined with concentrations of unusually low amounts of Hydrogen and helium.
How? Old galaxies that fusioned themselves dark, or new galaxies which haven't yet formed stars.
Feel free to win the Nobel prize with this info, just send me a check of 10% of the prize.
2007-08-18 09:48:29 · answer #3 · answered by Jeremiah 3 · 1⤊ 0⤋
we've detected darkish count a protracted time in the past. the concern with differential rotation curves of galaxies replaced into primary for many a protracted time. It only did not make a capability on astronomy and cosmology because of the fact it regarded like a ingredient that could finally be worked out with the aid of looking extra "straight forward" count with extra effective telescopes that would desire to work out chilly gasoline, dirt, brown dwarfs etc. interior the a techniques infrared which does not take place in optical telescopes. Now that we've the extra effective telescopes and we've not considered all that chilly straight forward count necessary to describe the structures of galaxies and the universe ordinarily, the top that darkish count isn't "straight forward" is inescapable. it is definitely only an application of Occam's Razor coupled to the actuality that we did not have stable observational top limits on chilly gasoline, dirt etc..
2016-12-30 18:29:47 · answer #4 · answered by simonson 3 · 0⤊ 0⤋
A gas is just a collection of particles that interact weakly with each other. Dark matter fits that definition nicely.
2007-08-18 11:45:40 · answer #5 · answered by Dr. R 7 · 0⤊ 0⤋
gas? i think of dark matter or anti matter to be like an opposite. Like dopplegangers. So it's just the other side of the matter around you.
2007-08-18 09:12:14 · answer #6 · answered by Anonymous · 0⤊ 0⤋
I have not read much about those speculations yet. But as you say if they are just speculating then you can speculate as well.
But you write "what is your opinion", I can speculate but can not be opinionated on something which is just a speculation. It is true for every one.
2007-08-22 00:08:28 · answer #7 · answered by Harihara S 4 · 0⤊ 0⤋