02-02-2009, 01:13 PM
ngauger Wrote:Only because I have a peeve about details being correct... That should be "Some" of the stars are not there anymore.....We're saying the same thing
the younger stars are still there, but yes, not very many. They have been replaced by newer stars, our scientists gather, but again - since their light has not reached us yet, we can't be sure...
... I wasn't referring to the the end of their existence (although that is the case with some), just the change of movement. Just like our Galaxy, all other spiral galaxies rotate as well. The stars move on orbits around the centre of the Galaxy. For some, that movement may not be much (10-.1 arcseconds per year) but it is still movement making them not where you see them. Even the image of our own sun is eight and one half minutes old by the time we see it.ngauger Wrote:The light would not be "seen" on Proxima Centauri for 4 and a half years. Now, this means, that if a train was traveling near the speed of light, before it lost it's mass... The light leaving the flash light inside would visibly slow, because our scientists have proven that the speed is constant and never changing no matter "where" the light is or how fast it's going.... In other words, the person holding the flashlight would "catch up to the light " when it it first turned on. After that - the "beam" would be a solid beam as if you turned one on standing on the Earth at night.This also gives further understanding to the theory that as an object or person is accelerated toward the speed of light, time slows down for it/him.