- #1
Minus1
- 16
- 0
Do you think dark matter and dark energy actually exist or have we just got the theory of gravity completely wrong but just haven't realized it yet?
Chronos said:For starters, dark energy and dark matter are unrelated. Their only commonality is the word 'dark'.
Minus1 said:Do you think dark matter and dark energy actually exist or have we just got the theory of gravity completely wrong but just haven't realized it yet?
twofish-quant said:Also it's unlikely that we've gotten gravity *completely* wrong. The models of gravity seem to more or less work most of the time. One of the difficulties in coming up with a gravitational explanation for dark matter or dark energy is that your new model has to come up with the same predictions as the old models when you don't deal with situations where there is dark matter or dark energy.
So the general approach that people have taken is to start with standard gravity and then add a "correction" that only becomes big when you have dark matter or dark energy. No one really has gotten this to work well.
Minus1 said:From what I see our current theory of gravity seems to very limited, it doesn't work on the quantum scale and now apparently when you extend it to sizes bigger than a few galaxies it doesn't seem to work either
in my own opinion i think its a bit far fetched just adding an unknown force to compromise something we don't know about, its a bit like the ether concept, we're trying to explain a new phenomenon using old ideas, gravity is probably a lot stranger than we all imagined or even can imagine
Dark matter is a type of matter that does not interact with light or other forms of electromagnetic radiation, making it invisible to telescopes and other instruments that detect light. It is different from regular matter because it does not emit or absorb light, and it does not interact with other types of matter through the electromagnetic force.
Scientists have not directly observed dark matter, but they have gathered evidence for its existence through various indirect methods. These include observing the rotational speeds of galaxies, gravitational lensing, and the distribution of matter in the universe. These observations suggest that there is more matter in the universe than what can be accounted for by visible matter, leading to the theory of dark matter.
Dark energy is a hypothetical form of energy that is thought to make up about 70% of the total energy in the universe. It is believed to be the driving force behind the expansion of the universe. Dark energy and gravity are related because gravity is the force that holds matter together, while dark energy is thought to be responsible for the acceleration of the expansion of the universe.
Dark matter and dark energy are thought to play a significant role in the formation of galaxies and the large-scale structure of the universe. Dark matter provides the gravitational pull necessary for galaxies to form and prevents them from flying apart. Dark energy is believed to be responsible for the accelerated expansion of the universe, which affects the distribution of matter and the formation of galaxy clusters.
Yes, there are ongoing experiments and studies being conducted to better understand dark matter and dark energy. These include using powerful telescopes and detectors to search for and study the effects of dark matter, as well as conducting experiments to try and directly detect dark matter particles. Scientists are also working on developing new theories and models to better explain the nature of dark matter and dark energy.