So, what people have thought is that perhaps there are supermassive black holes which matter is falling on to.
خوب اين همان جايي است كه برخي فكر مي كنند شايد سياهچاله اي ابر پر جرم در آن وجود داشته باشد جايي كه مواد به درون آن فرو مي ريزند