Would it actually matter (so to speak)?
Let's say the Earth's core is primarily molten iron, as is the current mainstream view.
Let's say, hypothetically, that at the center of this core is a black hole. What would that mean to the Earth's core?
A black hole is just a mass that is dense enough to exist entirely within its own Schwarzchild radius. Obviously this mass is already accounted for in our observations and predictions about things like the Earth's gravity, its rotation, its orbit around the Sun, etc.
Since it's surrounded by molten iron, it must be the case (?) that the black hole is getting larger (heavier, denser) as molten iron flows through the event horizon. It must therefore also be the case that the amount of molten iron at the core would diminish over time.
So the overall mass would stay the same, but would we expect to see other phenomena as this process proceeds?
The black hole would not expand in size to occupy the volume vacated by the molten iron it's taking in. So over time a hollow would develop between the hole and the mantle. Would the mantle collapse inward to fill this volume? Should we be detecting a constant series of deep quakes as the inner mantle itself collapses inwards to fill the void left by the vacating iron?
What about accretion-related emissions? One way we detect black holes in space is by the energy given off by matter as it accelerates towards the event horizon. Should we be detecting energetic events from the molten iron as it approaches the horizon?
What about the Earth's magnetic field? As more molten iron gets consumed, shouldn't the field weaken? Or do we hypothesize that the black hole itself is charged and spinning, and that the electromagnetic field generated by the iron is replaced more or less one-for-one by the hole itself as it grows from that iron?
Would the Earth be steadily shrinking in diameter?
Let's say the Earth's core is primarily molten iron, as is the current mainstream view.
Let's say, hypothetically, that at the center of this core is a black hole. What would that mean to the Earth's core?
A black hole is just a mass that is dense enough to exist entirely within its own Schwarzchild radius. Obviously this mass is already accounted for in our observations and predictions about things like the Earth's gravity, its rotation, its orbit around the Sun, etc.
Since it's surrounded by molten iron, it must be the case (?) that the black hole is getting larger (heavier, denser) as molten iron flows through the event horizon. It must therefore also be the case that the amount of molten iron at the core would diminish over time.
So the overall mass would stay the same, but would we expect to see other phenomena as this process proceeds?
The black hole would not expand in size to occupy the volume vacated by the molten iron it's taking in. So over time a hollow would develop between the hole and the mantle. Would the mantle collapse inward to fill this volume? Should we be detecting a constant series of deep quakes as the inner mantle itself collapses inwards to fill the void left by the vacating iron?
What about accretion-related emissions? One way we detect black holes in space is by the energy given off by matter as it accelerates towards the event horizon. Should we be detecting energetic events from the molten iron as it approaches the horizon?
What about the Earth's magnetic field? As more molten iron gets consumed, shouldn't the field weaken? Or do we hypothesize that the black hole itself is charged and spinning, and that the electromagnetic field generated by the iron is replaced more or less one-for-one by the hole itself as it grows from that iron?
Would the Earth be steadily shrinking in diameter?
via International Skeptics Forum https://ift.tt/3crDjj4
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