Maybe it would be wise to introduce yourself in the "introduce yourself" thread.

In comparison with the universe, nothing is THAT big.

Not even a large poptart!

with square pants.

Posted By: jsimpleton

LOL!!!! "The black hole is not THAT big."
I think that's is going to be one of my favorite quotes

Everything is relational... so youc an't quite argue it

ok once more its not THE SPEED OF LIGHT black holes in relationship to time travel is blah blah blah gravity... blah blah ok thats all fine and dandy but the speed is determined from E=MC2... ... ... SQUARED not faster than the speed of light faster than the SQUARE of the speed of light, and there is no "EVIDENCE" of black holes either, its a theory and so are white holes... in fact so is pretty much everything in cosmology since none of it can actually be proven as of yet. Now all this works on paper according to formulas... but so does 1 + 1 = 3... we proved it in calculus in high school. What matters is what can ACTUALLY be done. like your nifty 1, -1,2,-2 trick to convince me that any amount of something can be both infinite AND countable... when I said logic I meant real world, numbers are symbols to visualize an abstract idea... they mean nothing. Yes you can always add one more to something so ABSTRACTLY you can have an infinite countable anything... but in reality something cannot have no end and have an end at once... the end

These arguments are all so twisted that it's impossible to respond. Trance is right, that's an illogical point. Not to mention that we DO know black holes exist, but most of you are assuming them to be something that IS a theory.
A black hole is simply a massive clump of gravity created by an unknown source. Einstein believed it was a hole in time-space, some of you thing it's a wormhole, which is something entirely different.

"Alias_Facto".... im doing a masters degree in theoretical physics... and I honestly do not have a clue what you are talking about

well cmseagle, we only know black holes exist through circumstantial evidence: their gravitational footprint. Of course noone has ever seen one, so we have no idea what happens beyond the event horizon. It is perfectly possible that a black hole is an entrance into another universe that has all its mass concentrated through a singularity... it's something I've thought about and called "drip theory", but I'm sure that other people have thought about it too. The idea is that a 'hole' is pricked in the space time fabric and matter and energy falls through into a new universe, kind of like a balloon with an infinitesimally thin neck.

just thoughts though.

Isn't there also no conclusive evidence for molecules? Most scientists, if not all, appreciate they exist.
What evidence do you have, Alias_facto, to disprove black holes?

Yeah -- I think most astrophysicists would say black holes exist. It would depend on where you draw the line of 'conclusive'.

Posted By: Fizz

time travel is not possible because time doesnt exist. dimensions dont exist. the world doesnt exist. matter doesnt exist. energy doesnt exist. i dont exist and you dont exist. the only thing that exists is one imagination. it would be your imagination if you really existed but you really dont you are just imagining it.

Even I can see holes in your statement. I can only begin to imagine what the "smart ones" will have to say about this.

He's a solipsist, methinks.

Wow, I've never met one before!

I've got a photograph of a black hole

I have enjoyed reading dozens of alleged occurrences of genuine, physical time travel and would really like to believe that they are true. But relatively recently, I encountered a considerable obstacle to my accepting that practical time travel as a layman such as myself imagines it is possible: If the Earth is constantly spinning and circling the Sun, and if the Sun is constantly moving through the Milky Way, and if the Milky Way itself is also constantly moving through the Universe, then it would seem right to assert that the Earth is never in the same space position twice. And if that is the case, then would not anyone who might enter into a time machine in Florida and travel several years into the future reappear millions of miles away from the Earth, which would have since ten years past moved a great distance away from where it was when the time machine vanished into the future?
The popular website Wikipedia's own entry on time travel addresses this very issue. However, the solution that follows it seems to consist of a cop-out that uses Einstein's brilliant Theory of Special Relativity to basically skirt the issue by asserting that spatial locations are completely relative and, therefore, irrelevant.
In order to accept that practical time travel is possible, must I be sacrifice my understanding that our planet is not stationary in space? Say it isn't so!

If you could create a machine that, instead of traveling through time, let time travel quicker around it, the machine could 'travel' into the future.

Kinda like installing some sort of perception filter in a machine, where time seems to move a lot quicker than it actually is (or is perceived to be, by everybody else).

It's kind of hard to put into words...

But - hey, if you could create a machine that can travel through time and space, it'd be relatively easy to get back to Earth.

Huh?

Just because my watch has only gone forward two hours, doesn't mean my body has.
if six months passes, it doesn't matter whether I'm in a traveling car (assuming it's not traveling at the speed of light or faster) or sat down in a chair, I still get six months older...Don't I?

Posted By: fatlardo

Have you never watched Doctor Who!!??

Most of the active users here live in America.

If you're standing atop a moving train and jump straight up, do you not land atop the train, in the same spot from which you jumped?

It is so with time travel. If you "jump" forward, you continue to have the momentum you had before, and will arrive in the same place. Of course, the danger is that if you jump forward, and somebody uses your time machine as their personal locker in the 10 years you're gone, you may wind up attempting to occupy the same position in time-space as their stuff, and die instantaneously.

But hey, that's the risk you take in the name of science.

(This post dedicated to the memory of Albert Jacobs, PhD.)