Theoretically, they really exist. :P
Seriously, we're almost certain that black holes exist, but we've never quote-unquote seen one. However, then we get into all these rules of quantum mechanics that say they don't exist and do at the same time, then we realize that quantum physics and relativistic physics need to be reconciled, so we start looking for a formula to do so, keep looking, then look some more...
The top statement is much easier to handle, don't you think?
There are no "black stars" in space. There are black holes, but they don't really "mean" anything, they're just a thing that theory predicts can happen and observation suggests does seem to actually exist.
No one is 100 % sure that Black Holes really exist. Mathematics tell us that they should exist, but it has not been proved yet. Most physicists believe they do exist in our universe. We could have Black Holes that may be a billion times larger than our Sun.
None at all.Black holes do exist. They have been observed.
Blue sand does not exist in nature. Black, yellow, and red sands can be found in different locations around the world.
as a mum of 3 i know about the smurfs quick answer is yes long answer is that they are fake so they dont really 'live' but if it is in the cartoons, movie or smurfs village yes they do
nope......
Telekinesis does exist , there is a varied concept of the power. i for one have many uses for it , i can have the tv remote telepathically handed to me.
Not to the knowledge of the human race, no.
the black plague does still exist today, however it is a really rare disease
Gods are theoritical ideas. Man is proven to exist and to occupy this Earth. God gives and forgives man gets and forgets
We know nothing about the conditions within a black hole, but it seems unlikely that a black hole could exist within a black hole, or even if this concept would have any meaning at all.
Nope you may see hair that look really dark or black but it is actually very dark red hair
of course they do and there no different to white people
i really dont know because ma in seventh grade i need to know this
i really dont know because ma in seventh grade i need to know this
Black fire is a theoretical concept and does not actually exist. Fire typically burns at temperatures ranging from 600 to 1200 degrees Celsius, depending on the fuel source.
The question is "what is existence?" If the answer is "existence is a concept in the minds of thinking beings" then if there are no more thinking beings the concept cannot exist.