Re: Anyone studying Galaxies ?
<Galaxies are made in all kinds of shapes but there are classifications.
Our own galaxy is known to be barred.
They must be as old as the universe, or just slightly younger.
As all galaxies move away from each other (except the 8 nearest ones (M31 is getting closer, in fact), the expansion has been deduced from this observation. But it happened 13 Billion years ago and the center of the Universe is not really a place but an event in time, in the past (the Big Bang) .
This is a space topic and has its place in the habitablezone BBS.
Raoul