Under the right conditions

Under the right conditions, which in this case means a moonless night at an extremely dark (no light pollution) locale, the bright band of the Milky Way can cast a shadow.

I just learned this.

And I found a picture of this unusual occurrence, too.  While I search for more, take a look at this:

A Milky Way Shadow at Loch Ard Gorge

Here's the picture, but it's bigger (and explained) at the site at the link, where it's an Astronomy Picture of the Day (APOD).