What is *Dark Energy* - Does it realy exist, or is it just another Cop-out from the relativity freaks........?

Question

................. Cos' they can't explain relativity and don't have the balls to admit it

Answer 1

Yes it is a copout by mathematicians to show that their equations work Using unreliable predicted data or total mass in the universe and try to match it with exisiting known mass and dark matter

Answer 2

There are two lines of evidence for "Dark Energy". One is that the distance-brightness relationship for type I supernovae deviates from the relation expected without a cosmological constant, and the other is that the spectrum of fluctuations of the Cosmic Microwave Background is consistent with a "flat" curvature of the Universe, and the energy density of the Dark Energy is the only possible source of the stress-energy needed to do that. Both are quantitative measurements, and they agree, at the 15% level, about the amount of Dark Energy.

That being said, it could all be a mistake. If so, that will become apparent in the next five years or so, because several major observational programs are in progress to measure details about the Dark Energy, and if it doesn't actually exist, then there will be major discrepancies between those observations and reality.

Dark Energy was not discovered by relativity freaks, who presumably are theorists. The existence of Dark Energy was suggested by observational data, and was a surprise to most theorists.

Answer 3

Relativity is the single most experimentally verified theory in science. Nothing is more of a "fact" than is relativity.

Dark energy is the energy that causes the matter in the Universe to speed up as it flies away from the other matter. Until DE was found we all thought that since matter began spreading out from the Big Bang it should be shown that over time that expansion would be seen to slow down, after all gravity between matter should retard the expansion. But experiments and observations showed the opposite. The farther away matter was from other matter the faster it was travelling and the farther it was from the "center" of the Unverse the faster it was moving.

DE is dark because we still don't understand why it is there and how it works. It is more of an indictment of Newtonian physics than Relativity.

Answer 4

Dark Energy is a term given to a force that appears to oppose gravity. It is very weak , but it operates over incredibly large distances. The observational evidence for its existence is very good (see the other replies).

The force was actually proposed by Einstein back in 1920's, as he believed that models of the universe required his general theory of relativity to possess this property. Shortly afterwards De Sitter and others showed that this was not necessary and Einstein described the idea as his greatest mistake. In retrospect it may be his greatest triumph.

If you can read, then the book given below should give you an excellent understanding of relativity and other matters.

Answer 5

Just because you don't understand relativity doesn't mean it can't be explained.

Measurements made by atronomers are affected by the presence of unseen matter and that has been termed "Dark Matter" and the nature of it is unknown at this time. Everything in the universe is not in a form easily observable by us but that doesn't mean that something doesn't exist.

I would try and explain it better to you but I wouldn't want to sound like one of those "relativity freaks" and confuse you.

Answer 6

not at all- it is an interesting hypothesis, one that I believe will be borne out with more experimental evidence. Dark Energy must also exist if Dark Matter does, why? e=mc2 You cannot have one without the other, which brings us to the question of whether Anti-DarkMatter and ant-Dark Energy also coexist in the Universe.

Fascinating work in Astronomy- especially since much is still not known of the structure of the space-time continuum.

Answer 7

?

All experimental data confirms relativity. Einstein was a genius of extreme proportion; he came up with this stuff long before it was even testable, and would you look at that, he was right.


Dark Energy certainly does exist...that's a fact.


What is it exactly, how does it work and how did it get there? Well, those are questions we can't really answer properly right now.

Answer 8

Neither of those words are "theory". they are the two used as indication that we nonetheless have some products lacking from our familiar Catalog. here is going. dark rely is rely it incredibly is undetectable by making use of its emitted radiation, yet whose presence may well be deduced nevertheless from gravitational outcomes on seen rely. case in point, if we degree the velocities of stars in galaxies then we see that they are shifting lots speedier than they could, if we take purely the seen rely into consideration. consequently we are lacking diverse rely interior the equation. that's named dark by way of fact we don't see it. next dark potential. Ten years in the past a learn of a techniques away supernovae indicated that the accelerating of the Universe is increasing, somewhat of lowering because it is going to in accordance to the unique large Bang form. recently measurements of the cosmic microwave historic past anisotropies, coach that the universe is quite on the fringe of flat. the entire quantity of rely necessary for that to be actual, is a techniques extra desirable than we are able to verify. Worse, even accounting for the dark rely that we already could clarify galaxy rotation curves, nonetheless seventy 5% of the mass/potential is lacking. Oops! So what do you do, while something so large looks thoroughly unknown? properly, the 1st ingredient you do is to grant it a acceptance: dark potential.

Answer 9

Yeah, those "scientists" have been using "science" to come up with stuff. This "science" can "prove" things. When will these guys admit that "science" isn't true. After all, they've only invented things like "cell phones" and "space shuttles". those aren't even that impressive. Can you get my sarcasm. I can tell right now, that you are probably not the smartest tree in the forest. It would probably be best for you to stop thinking and start just listening to what scientists tell you.

Answer 10

the thing is i have never heard of dark energy, but there is something called dark matter which is the particles between atoms.