Originally posted by jkrog08
But yea, I was incorrect as a lightyear is the time it takes light to travel over a one year period, as you said. 
No, that's not what he said. He said that a light year is the
distance light will travel in a year. Not the time it takes. It takes a year for
light to travel for a year.
Lightyear = distance
Year = time
Do you understand?
Although that "universal constant of c" is now under major scrutiny, as it now appears under certain high energy conditions it has been tested
and show that c (so far) can be accelerated to four times c!.
Do you have a reference for this? A scientific one, not a movie or somebody's geocities page.
Another issue is the near proof that spacetime is expanding, so under normal conditions yes, lightspeed is the fastest possible speed(in REAL
space).
BUT, under certain other conditions and especially when it has been nearly proven that space itself is expanding faster than c, there is no
limit to how fast SPACE can expand, only how fast (under most lower energy conditions) light can travel through spacetime.
You're confusing special relativity and general relativity.
We still have a lot to learn, but those aforementioned theories, postulates, and observations will lead to major revisions in Einsteins field
equations IMHO.
It's true we have a lot to learn, and our theories are going to change
So as of now the most logical, promising, and likely method to achieve FTL is to utilize manipulating expanding space, thus Einsteins laws become of
no concern when traveling out of real space. There is going to be A LOT of great breakthroughs in the next 50 years at most IMHO. 
This sounds like Dune. Dune is scifi. The fi in scifi is short for fiction. Dune is fiction, the theories it proposes are by no means promising
[edit on 8-12-2009 by georgejetson]
