Year 2012: End of the World

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Question:
2012(the date) – quotes from a book about the massive black hole in the center of our milky way What!!?
I have this book and quoted something out of it with source so how could they know this and does it mean anything really science related – i don’t give a crap about the whole 2012 thing thinking something is going to happen but this part intrigued me..

2012
The Return of Quetzalcoatl
Daniel Pinchbeck

Part 4
The Loom of MAYA

Here is a section from chapter four Page 238 – great section to read

In September 2002, astronomers verified the existence of a massive black hole at the center of the Milky Way, naming “Sagittarius B.” Jenkins writes:

Something very profound and mysterious is going on here. Is it just a coincidence that lurking deep within the dark-rift “black hole” is the very real Black Hole at the center of our Galaxy? If not a coincidence, the dark-rift itself might indeed be the surface signifier of deeper cosmic mysteries, ones that the Maya were well aware of.

So how could the maya be aware of this. and what else can you tell me about this anyone -

thank you

Additional Details
My friend says this which makes no sense to me

There are likely super-massive black holes at the center of every galaxy so I don’t see the significance of this.
should this be common knowledge to the maya knowing about a massive black hole

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Question:
If u put 2 black holes parelle from 1 another will they pull eachother together or cancel it. also could a black hole that was the exact same size of another pull a the insides of eachother inside out and possibly revers the effects of a redgiant from exploding or will this just creat a rift in the universeallowing us to travel through dimensions
ohh 1 more thing, could black holes also be minutare big bangs waiting to happen, like they take up so much matter that they eventually get filled up and burst causing all the gas and dust to spread out through the universe
————( )————
ok these black hole are facing eachother
( = black hole 1
) = black hole 2

but what if black hole 1 and 2 pulled eachother into eachother

————-(–l–)————
soon they would get closer and closer to eachother and eventually meet at that line
————–()————–
their about to meet and then
————–)(—————
go into eachother
would it get cancelled out, could it pull everything out of 1 another?or could everything just vanish causing a flaw in the theory that energy does not created nor destroyed

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Question:
Im referring to the prophecy that on the winter solstice of 2012 the end of the world will come, because a black hole will be close enough to the earth for a polar shift which will cause disaster all around the world.

So really my question is how plausible is this and why is it any different from all the other prophecies that have failed in the past?

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Question:
I heard from reliable sources that the galaxy has a black hole at the center and in 2012 we could get sucked into.

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Question:
….In 2012 the dead will walk the earth. how would you foresee that? Chemical wat fair? Sean of the dead style? will it be on a large scale or just in 1 country. Bear in mind he did say the dead will walk the earth. tell me what you think?
Although we can not see or detect a black hole yet, we have started one. It could be very minor and stay that way but the fact is we have created this in the making. So, 2012 what a lot of fun thats going to be.