Yes, there are many, many other galaxies. Lots of them can be seen through telescopes, so we can even directly see their shapes.
We have no idea of whether there is life on other galaxies, or even on planets in distant parts of our own galaxy. It is extremely hard to figure out how easy it is for life to get started on a planet. People do search for some sort of evidence for distant life, but none has yet been found.
Here is a picture of a very nice spiral galaxy taken by the Hubble Space Telescope:
And here is a picture taken by the Hubble Telescope’s deep-field camara, showing just how many other galaxies you can find just by looking for them!
There are lots and lots of beautiful pictures of other galaxies you can find on the web. Galaxies come in many shapes and sizes and colors. Some even have collided with each other, or are colliding even as we watch (well, they were colliding when they emitted the light that we now see, which has been traveling for quite some time).
(published on 10/22/2007)