Galaxies etc

[Susan123]

I am trying to figure out a few things - we are in the milky way galaxy, and we revolve around the sun. Are there other sun-like objects in the milky way  - ie, is there another sun (or large star) with  planets that revolve around it in the milky way? Or is there just one sun (ours)?  If there is, I thought we were on the edge of the galaxy, and we were revolving around a "hole" in the centre of it.  I can't seem to find out, so thanks if you can explain in easy terms!

[steveb]

every star in our galaxy is another sun there are planets revolving around some/most, not quite sure, of the other suns

[steveb]

sorry bout the split post, there are between 200 and 400 billion other stars in the milky way, all of which are suspected to orbit around a supermassive black hole at the very centre of the galaxy.

[dave_c]

steveb's right, the sun is just another star in the galaxy.

And yes I think we're (our solar system) right in the edge of the Milky Way on the edge of one of it's 'arms' (the pointy bits).

Planet's are definitely found in other star systems (so far with current technology/telescopes, we could only detect the big gas giants)

Other than stars theres dark matter (which is another subject altogether).

And it's thought there is one big black hole in the centre of our galaxy!