Astronomers have been studying "Black Holes" for years, with their ability to suck large amounts of material and sometimes expel jets of waste material at high velocity...
PS. The Russians call them "Frozen Stars" rather than "Black Holes", partially to avoid the term "Black Hole"...
_________________________
"If they can't picture me with a knife, forcing them to strip in an alley, I don't want any part of it. It's humiliating." - windsock