Quote:
Originally Posted by AnotherCat
An example is, if the current model of the universe's expansion is correct, that galaxies sufficiently far away from us are traveling at speeds greater than that of light. Furthermore, despite their speed being faster than that of light, we can still see some of them.
|
That's because space
itself is expanding at FTL speeds. That is not prohibited by relativity (this is why the Alcubierre 'warp drive' isn't impossible right off the bat), just FTL movement
through space is.
And we can only see them because they weren't yet being pushed apart at FTL speeds when the light we see now was sent.