where are you getting 12,000 years?our galaxy from 1 end to the other is 100.000 light years so even going in blink of an eye would still take you
about a 100.000 years.
Teleporting in an instant would ignore light speed and distance.
Now, how did I arrive at over 12,000 years with instant teleportation?
An average sized Spiral Galaxy, like our own, has about 400 - 500 BILLION stars.
We'll use the low number just to be conservative, so, 400,000,000,000 stars.
Spending only one second at each star (with zero travel time to each one; instant teleport travel) = 400,000,000,000 seconds.
How many minutes would that be?
Divide 400,000,000,000 by 60 = 6666666666.666667
hmmm, that's still ambiguous looking so, how many hours would that be?
6666666666.666667 divided by 60 = 111111111.1111111
eh. Still a bit ambiguous.
Days? divide by 24 for each hour in a day, right?
4629629.62962963. That a lot of days and still a little ambiguous looking.
Let's divide by 365 for days in a year ...
Rounding up, we then get 12,684 years to tour a Galaxy consisting of 400 Billion stars.
Rounding down to the ten thousands, we can say 12,000 years.
See how that works?
With instant teleportation, and visiting each star for only one second each, it'd still take someone well over 120 lifetimes.
Now, if we were limited to light speed travel, with all the crisscrossing, and pin-balling to each and every star with the average distance between
each star being about 5 light years between each one, it would take 5 x 400 Billion years + that little 12,000 years if you like to explore our Galaxy
as a single individual.
That's 2,000,000,012,000, or Two Trillion years by the way ... which is about 145 times longer than the current age of the Universe.
That's just ONE Average sized Galaxy too.
Suffice to say, the Universe is quite vast.
As stated before, to properly explore the Universe, one would need be immortal, and have a Space-Time Machine because, the Universe is also not
static. It's changing all the time, and even the very fastest methods of travel imagined, like teleportation couldn't even keep up with the changes
of the Universe over time if even one second were spent at each star.
edit on 1/10/2014 by AliceBleachWhite because: (no reason given)