Although you may not believe, what appears in the picture is dust. There is an area in the sky, called Barnand 68 where, within it there so much space dust that no stars or at least not seen.
Elements like these are called dark clouds or dark absorption nebulae. Mainly composed, as I said, of dust and molecular gas, mainly carbon monoxide which is very absorbing things.
Places like these, thick noses, usually (with the passage of time) a very normal for the creation of new stars because of gravitation own site is inside. That if very long.
The size of the cloud Barnand 68 is about half a light year (let’s not great to say) and is located about 500 light years from here.