when will a black hole hit earth

A black hole hitting Earth is extremely unlikely to happen at any time in the foreseeable future or even the full history of the Solar System. The probabilities of such an event are extraordinarily low, on the order of 1 in 100 billion over the Solar System's 4.5 billion year history. If a black hole were to approach the Earth very closely, it could either swallow the planet directly or cause severe tidal forces that would rip Earth apart (a process known as spaghettification). However, for this to occur, the black hole would need to pass extremely close, which is a very rare event. More likely than a direct hit is the possibility of a black hole passing near enough to disrupt the Earth's orbit around the Sun, which could have catastrophic effects on Earth's climate and habitability, but such a close approach is also very improbable. In the universe, collisions between black holes have been observed, but these occur billions of light-years away and pose no threat to Earth. The closest observed black hole collisions have confirmed theories in physics but remain safely distant from our Solar System. In summary, there is no scientific prediction or evidence suggesting a black hole will hit Earth anytime soon or even in the distant future, making such an event practically impossible based on current knowledge.