Scientists have been trying to figure out ways to observe dark matter and make predictions based on theories of it however without much success.
Einsteins theories of unique and basic relativity, for example, discussed information that Newtons theory couldnt. He established a theory of gravity (called Modified Newtonian Dynamics or “Mond” for brief) in 1982 that postulates gravity functions in a different way when it becomes really weak, such as at the edge of disk galaxies.
One method to separate excellent theories from bad ones is to see which theory makes better predictions.
A modified theory may not be as sexy as dark, unseen forces, but it might just have the benefit of being better science.
Scientists believed that there need to be more matter present in these galaxies than we can currently observe. Something needs to be keeping the stars from flying away, and they called that something dark matter. The huge bulk of the universe (a massive 85%) need to be dark matter.
When it pertains to science, the difficulty with something that you cant observe is that its hard to say much about it. Since dark matter does not engage with the electromagnetic force– which is accountable for visible light, radio waves, and x-rays– all of our proof is indirect. Researchers have been trying to determine methods to observe dark matter and make predictions based upon theories of it but without much success.
A Possible Solution
Newtons Theory of Gravity discusses most massive occasions relatively well. Whatever from throwing the very first pitch at a Yankees game to the motions of constellations can be discussed using Newtons theory. However, the theory is not foolproof. Einsteins theories of general and unique relativity, for example, discussed data that Newtons theory could not. Due to the fact that it works in the overwhelming majority of cases and has much easier formulas, researchers still utilize Newtons theory.
What if, rather of reconciliation, a modified theory is required. He established a theory of gravity (called Modified Newtonian Dynamics or “Mond” for brief) in 1982 that postulates gravity functions differently when it becomes really weak, such as at the edge of disk galaxies.
His theory does not merely explain the behaviors of galaxies; it predicts them. One method to separate great theories from bad ones is to see which theory makes much better predictions.
Current analysis of Mond reveals that it makes significantly much better forecasts than basic dark matter models. What that indicates is that, while dark matter can describe the behavior of galaxies quite well, it has little predictive power and is, a minimum of on this front, an inferior theory.
Just more data and dispute will be able to settle the rating on dark matter and Mond. However, Mond coming to be accepted as the very best description would shatter decades of clinical agreement and make one of the more mysterious functions of deep space a lot more normal. A customized theory might not be as attractive as dark, unseen forces, however it may just have the benefit of being much better science.
What is dark matter? Does it even exist, or do we simply require a modification to our theory of gravity?
What is dark matter? The short answer is that no one knows what dark matter is. A growing number of physicists think that the answer might be that there is no such thing as dark matter at all.
The Backstory
Researchers can observe far-away matter in a variety of ways. Devices such as the well-known Hubble telescope determines noticeable light while other innovation, such as radio telescopes, steps non-visible phenomena. Researchers often invest years collecting data and after that continue to analyze it to make the many sense of what they are seeing.
What became perfectly clear as more and more information can be found in was that galaxies were not behaving as anticipated. The stars at the outer edges of some galaxies were moving far too quickly. Galaxies are held together by the force of gravity, which is greatest at the center where the majority of the mass is. Stars at the outer edges of disk galaxies were moving so quickly that the force of gravity produced by the observable matter there would not have actually been able to keep them from flying out into deep area.
