Are there any dark stars or dark galaxies made of dark matter?

Question

I understand that 90 to 95 percent of the mass in the universe is dark matter, and this dark matter interacts only with gravity. If this is true, is it possible that there are dark worlds orbiting dark stars? Perhaps even dark galaxies?

Answer 1

This strongly depends on what dark matter is made of. And, at this point, we simply don't have the answer to that question. It *appears* that dark matter only interacts through the weak force and gravity. If that is the case, dark matter won't be very 'clumpy', so probably would not form stars or planets. On the other hand, dark matter *does* tend to congregate where there is ordinary matter, so most galaxies are actually mostly dark matter. We have not yet detected a galaxy that is purely dark matter. Although that isn't completely ruled out, ordinary matter would tend to congregate where there is a lot of dark matter also.

Answer 2

This strongly depends on what dark matter is made of. And, at this point, we simply don't have the answer to that question. It *appears* that dark matter only interacts through the weak force and gravity. If that is the case, dark matter won't be very 'clumpy', so probably would not form stars or planets. On the other hand, dark matter *does* tend to congregate where there is ordinary matter, so most galaxies are actually mostly dark matter.

Answer 3

If we know more about dark matter, we could make better guesses about the possibilities of "dark" stars. But if such things were possible, they probably would not literally be dark. "Dark" here just means hard to detect, not the actual color.

Answer 4

No stars. Stars use nuclear fusion. darkish matter won't be in a position to undergo fusion. Unknown for planets. whether, not one of the planetary technique all of us comprehend of can exist (climate, oceans, volcanoes, etc). those contain (finally) electromagnetic interactions and darkish matter is invisible to em interactions Galaxies... confident and no. large galaxies (and perchance dwarf, i don't comprehend) are embedded in a depressing matter halo. So, in a manner, galaxies are additionally darkish matter galaxies. darkish matter galaxies as a selection of darkish matter stars... no clever existence... unknown. definitely no longer existence as all of us comprehend it nonetheless

Answer 5

we dont know much about dark matter, but there is alot of it, so if it is matter with mass, gravity should pull it together into a larger mass.

Answer 6

there is no matter in the universe made of darkness the universe appere to be dark because of lack of light even after the star has died (ie.completely burnt out ) it turn into black hole which is capable of absorbing all the material come near it the sun,star,meteorites,planets,every thing has its own colour since they are non illiminating light spountaneously some dont have there light it can be viewed when it come to us.

Answer 7

dark means where our eyes cannot reach. anything is possible

Answer 8

who knows their are many secrets in this world and we do not even know our brain totally

Answer 9

there might be