An external spiral galaxy.

face-on view

An external spiral galaxy.

face-on view

An external spiral galaxy.

face-on view

An external spiral galaxy.

face-on view

closest stellar black hole (A0620-00)

a compact group of galaxies, showing edge-on

and face-on views of

spiral galaxies,

and also an elliptical galaxy

the whole sky (long exposure photographs)

An external spiral galaxy.

face-on view How to get distances ?

pd

1

I.S.L.

Except for the closest

few galaxies,

they are all moving

away from us (fast!)