If strings, wormholes, blackholes& darkmatter are unmeasurable& undetectable things,how do we know they exist?

Answer 1

Strings are still just theory, hence the name string theory.
wormholes are also theoretical,black holes on the other hand have some proof to their existance, we cannot directly observe black holes, but we can see evidance of they'er interactions with nearby stellar bodys.
Now about dark matter,The first to provide evidence and infer the existence of a phenomenon that has come to be called "dark matter" was Swiss astrophysicist Fritz Zwicky, of the California Institute of Technology (Caltech) in 1933[1]. He applied the virial theorem to the Coma cluster of galaxies and obtained evidence of unseen mass. Zwicky estimated the total amount of mass in a cluster of galaxies, the Coma Cluster, based on the motions of the galaxies near the edge of the cluster. When he compared this mass estimate to one based on the number of galaxies and total brightness of the cluster, he found that there was about 400 times more mass than expected. The gravity of the visible galaxies in the cluster would be far too small for such fast orbits, so something extra was required. This is known as the "missing mass problem".Much of the evidence for dark matter comes from the study of the motions of galaxies. Many of these appear to be fairly uniform, so by the virial theorem the total kinetic energy should be half the total gravitational binding energy of the galaxies.

Answer 2

Black holes are detectable and have been detected. As for the others, physicists are always trying to explain how nature works. They know that general relativity and quantum mechanics break down under certain conditions, so they're looking for something better.

In this process, someone comes up with an idea, saying it might work this way or that way. If the idea seems plausible, others start working on it in an effort to prove or disprove it.

That's the status of the things you're asking about. The fact is, we know if they really exist, but they exist. There are three possibilities: (1) they don't exist and the theory is wrong; (2) they do exist but the theory's wrong anyway; or (3) the theory is right and they do exist.

Answer 3

They are theories that someday may be provable. It's like atoms - a Greek philospher, Democritus, in the 5th century wrote about them even though he had no way of knowing if he was right. It took hundreds of years to prove they exist.

http://www.csmate.colostate.edu/cltw/cohortpages/viney/atomhistory.html

We need these theories to have a starting point. As for blackholes...they are detectable and we do have measurements for them. It was once written in my Discover magazine that if a person had an ear as big as the Earth that person could hear a black hole Humming. But yes, the String Theory, Wormholes and Darkmatter are only theories to explain things that we already know are true.

Answer 4

I'm not a genius or anything, but i do know that black holes have a very strong gravity pull, so detecting something odd, like, say, asteroids or meteoroids circling what appears to be nothing, we can safely assume that there is a black hole there. The reason it looks like the objects are circling nothing is because not even light can escape the super-strong pull of gravity from a black hole.

Hope This Helps,
Mikey

Answer 5

You don't. First of all we can't travel to the mars yet. Then why bother to reassure things like black holes and worm holes. Just leave that stuff to sci-fi for now and concentrate on working inside our solar system.

Answer 6

We don't know they exist, they are just theories.

However with blackholes, they have seen areas of black with distorted light around them.

Answer 7

check out hubbels pics they are out there and one is what they think is a black hole.I was going to be a smart *** and say because I seen them on star trek but i didn't lol a good show

Answer 8

mathmatics is how we know