"G=EMC^2 Glazier" wrote in message
...
Flat because they are spinning fast and most of the galaxy's gravity is
located at its core,and its horizon. It is a pin wheel. Helps if its
flat rim is in our exact line of view. Bert


Sorry Bert,

but the rotation curves of spiral galaxies suggest this is not true. In many
spirals, the tangential velocity of stars is fairly constant with increasing
distance from the centre. If most of the mass were at the centre, the speed
would be expected to decrease with increasing distance from the centre.

Dave