What are the chances of a black hole hitting earth
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Chances of a Black Hole Hitting Earth
Primordial Black Holes and Earth Collision Probability
Primordial Black Holes (PBHs) in the Milky Way
Primordial black holes (PBHs) are hypothesized to be a component of dark matter in the universe. These black holes could be present in the Galactic halo and the dark disc of the Milky Way. The probability of a PBH colliding with Earth has been calculated, considering their distribution in our galaxy. The study suggests that while PBHs could theoretically collide with Earth, the likelihood of such an event is extremely low.
Consequences of PBH Collision
If a PBH were to collide with Earth, it could have significant consequences, such as heating the Earth's interior through dynamical friction and accretion processes. However, the study compares the danger of PBH collisions with asteroid impacts and implies that the risk from PBHs is not significantly higher than that from asteroids.
TeV-Scale Black Holes and Earth Safety
Hypothetical TeV-Scale Black Holes
Another study explores the potential effects of hypothetical TeV-scale black holes, which could be produced in high-energy environments like the Large Hadron Collider (LHC). These black holes, if stable and trapped inside Earth, might begin to accrete matter. However, the study concludes that such scenarios are extremely hypothetical and unlikely to pose any real threat.
Accretion and Macroscopic Effects
The research examines various gravity scenarios and accretion models, concluding that any macroscopic effects on Earth would not occur within the Sun's natural lifetime. The study also argues that if such black holes could have significant effects, they would have already caused observable changes in denser astronomical objects like white dwarfs and neutron stars, which is not the case.
Conclusion
In summary, the chances of a black hole hitting Earth are exceedingly low. Primordial black holes, while a theoretical possibility, pose a minimal risk compared to other cosmic events like asteroid impacts. Hypothetical TeV-scale black holes, even if produced, are not expected to have any significant impact on Earth within its natural lifetime. Therefore, current scientific understanding suggests that the risk of a black hole collision with Earth is negligible.
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