It's worth trying, though, as violations of the laws of gravity at very small scales would be good evidence for New Physics™. So physicists have been looking, though without much luck so far.

Theoretically, the law means that those gigantic clusters are still in adolescence, growing by drawing a large amount of surrounding substances with their strong gravity. "We've discovered the law ...

Gravitational waves confirm a black hole law predicted by Stephen Hawking. The “area law” says that a black hole’s surface area cannot decrease over time.