The extra dimensions are at the quantum level, if they are there. WMAP and Planck data show the universe to be nearly flat. It is very close to Euclidean in terms of its macroscopic geometry. We are talking about aliens that could, possibly, come take us over and make us their minions. I would assume they would have to be macroscopic in size and make macroscopic-sized instruments of war for us to take notice. At the very least, I would think they would be larger than quantum strings. I think the only way to go, for now, is from the start point to the end point if they are to get here. Anything is possible. I play the probabilities. Dave
On Feb 21, 2015, at 16:57, Rich Allen <rico@ricosweb.net> wrote:
Einstein's universal speed limit only applies if you pass through all points between your start and end point. We don't know if extra-dimensional travel is possible, but I wouldn't be arrogant enough to say that it's impossible. I also don't believe that extraterrestrial beings have visited our solar system... that kind of energy expenditure likely wouldn't be wasted on covert visits or joy rides that result in crash landings.
As has been stated before, we're already sending out signals. More of them, no matter what the message, won't tip the scales either way.
Rich Allen
_______________________________________________ Utah-Astronomy mailing list http://mailman.xmission.com/cgi-bin/mailman/listinfo/utah-astronomy
Send messages to the list to Utah-Astronomy@mailman.xmission.com
The Utah-Astronomy mailing list is not affiliated with any astronomy club.
To unsubscribe go to: http://mailman.xmission.com/cgi-bin/mailman/listinfo/utah-astronomy Then enter your email address in the space provided and click on "Unsubscribe or edit options".