SelkathKing wrote...
Dark energy does not give off a negative gravitational pull, which is why Negative Matter is essential to the idea of FTL travel. Humans don't know much about Dark Energy, from what I know, so I'm going to groundhog it out for a few decades to see if we can learn a bit more about it.
Don't argue physics with a physicist. I am not talking about "Dark Matter" which is the missing matter in the various Galaxy. I am talking about DARK ENERGY which has a net repulsive effect (in effect negative space time curvature) and is causing the universe not only to expand but to increase that rate of expansion. Edit: Yes this does mean that DARK ENERGY exerts a negative gravitational pull. It has to.
It's the latest thing in Astrophysics and Cosmology and ground breaking work has been done since the turn of the century, but the fact is that YES the latest evidence is that Mass-Energy that has a net negative zero-point mass
does in fact seem to exist and since it seems to exist, FTL (global FTL....local FTL is of course flatly impossible) is possible within our understanding of physics if only barely.
These days you will not find a responsible physicist familiar with the latest in Astrophysics and Cosmology that will make the flat statements you have. Most physicists today regard FTL as presented by Sci-Fi series to be almost pure hokum, that's true, but most agree that it's just barely possible within our understanding of physics (and many like Hawking are deeply disturbed by it because it also implies time travel....and so look for ways that is should be impossible).
Bottom line: What you said about FTL was the physicists bible.....about fifteen years ago. That was until a straight line projection of the universe's expansion gave a date for the big-bang that was five billion years too soon (that was in 1995). Since then the existance of Dark Energy (with a negative stress-energy tensor and thus effectively negative mass) has been pretty much confirmed, but no one knows what this type of energy is or what it's properties are (at least to my knowledge). There is much speculation....and within that speculation Global FTL is still remotely possible.
-Polaris
Modifié par IanPolaris, 17 août 2010 - 04:05 .