Black hole
= Black hole
{wiki}
= Black-hole region
{synonym}
In an asymptotically predictable spacetime, a black hole is the region that cannot send a causal signal to future null infinity. Its future boundary is the event horizon.
= Black hole
{wiki}
= Black-hole region
{synonym}
In an asymptotically predictable spacetime, a black hole is the region that cannot send a causal signal to future null infinity. Its future boundary is the event horizon.