Do you know what will happen if the moon turns into a black hole?
Miscellaneous / / April 05, 2023
This celestial rearrangement will make life a little harder for insects, but it will reduce the risk of global warming.
Sometimes it seems that our solar system is missing something interesting - for example, a quasar, a magnetar, a double blue giant. Or, at worst, some kind of black hole.
In the end, everyone would like to admire the beauties in the style of Nolan's "Interstellar" from the front rows. Therefore, let's imagine what will happen if we turn some object very close to us into a black hole. For example, the moon.
In general, an Earth satellite by itself cannot transform into a hole, because it lacks mass. The sun, too, by the way. To the celestial body collapsed under its own weight, it needs to have the mass of at least five suns. But we will still help the moon become a black hole by squeezing it harder. What then awaits us?
Some unexpected things will happen.
For example, the red crabs on Christmas Island will not be able to breed because they mating season starts at full moon. It is the moon with its light indicates them when they should migrate from the mountains to the ocean and lay their eggs. And without it, the poor crabs will die out if they can't adapt.
In addition, many insects use the light of the moon to navigate in space - this is called phototaxis. That is why, by the way, they are so willing to ram with lamps - they confuse natural sources with artificial ones and lose coordination. Probably, insects miss those times when people had not yet invented this nasty electricity.
In general, without the light of the moon, the life cycles of almost all nocturnal animals will be disrupted.
In addition, after its transformation into a black hole, we will not be able to admire solar eclipses. They just stop happening.
The fact is that a black hole with the mass of our moon would be smaller than a poppy seed. Its radius of the event horizon, a boundary that even light cannot leave, made up would be only 109 micrometers. For comparison: the thickness of your hair Maybe up to 180 microns.
As you understand, it would be problematic to notice such a black hole, despite the fact that it would peacefully rotate in the orbit of the Moon. However, in case of a sudden collision with it, any object would quickly split into elementary particles, which would fall beyond its event horizon.
And if our Earth will fly into such, she will not be in trouble. By words astrophysicist from the New York Flatiron Institute Paul Sutter, black hole even a small mass will pass through the planet like a knife through butter, and gradually absorb most of it.
While the matter of the Earth will fall beyond the event horizon, from it will begin form an accretion disk that generates sizzling heat. And in the end, the planet will be swallowed up, and its parts that will avoid this fate will form around the black hole some kind of rings of Saturn.
But the probability of such a collision is zero. Our black moon will continue to circle peacefully in its former orbit: it simply does not need to be attracted to the Earth.
Rather, the black hole, on the contrary, will move away from the planet - as now, gradually, by 38 mm per year, our satellite is moving away due to tidal acceleration.
The tides on the Earth will not change, because our newly acquired hole will have the same mass as the Moon. So, it will affect the orbit and the oceans in the same way. But how suggests NASA physicist Randall Munroe, it will still have a little effect on the climate.
Infrared light from the sun reflected off the current moon is slightly warms The earth is a fraction of a degree Celsius. The black hole will not reject rays, so the surface of our planet will become a little colder.
So if the transformation occurs, it will not particularly affect our lives, but the risk of global warming, on the contrary, will decrease. Good deal, don't you think?
On the other hand, Jeff Bezos and his company Blue Origin will not be able to take tourists to the moon to look at the modules left there by the Apollo mission. But these are trifles.
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