Through the gaps formed in the fossilized shell, a huge mass of fiery-liquid substance poured onto the surface of the crust, which, according to its volume, occupied the surface area. Well, after cooling it down, what do we see? Not the same lunar seas and oceans! Not the same lava flows on Earth? So that's the point. And no meteorites are involved here. And if they were involved, then only in the past, and by that time they had weakened the bark.
And now I would ask those who doubted when considering the mechanism of internal changes: was the core surrounded by a fiery liquid mass? Was it she who melted the inner shells to break through the cracks to the surface?
Why is the shape of the month pear-shaped?
Much has been said, but the question why the moon has a pear-shaped shape has not been answered. Therefore, before giving a direct answer, let us make a digression.
Judging by the number of seas on the Moon at the present time, many may have a question: did all these seas and the Ocean of Storms arise simultaneously, as they say, in one fell swoop? And if in one fell swoop, then what happens? Has the lunar core really become large to fill such huge areas with liquid?
These questions are quite fair. But the answer to them requires some research.
In addition, there was probably also a kind of preparation on the same visible side even earlier, long before the moment the nucleus moved in the same direction. And if we can now confidently consider the Moon as captured by the Earth and have dealt with the consequences of this capture, then all the same, the reverse side of the Moon could not become visible, that is, turned towards the Earth. The displacement of the nucleus towards the visible hemisphere is also not an accident, but a pattern.
Regarding the "seas" and "oceans", to put it in a few words, they arose at different times, but not very with a large interval. Of course, this can be believed only when direct research and study of the selenographic development of the crust, and at the same time the matter of the lunar "seas", are carried out.
If this were a one-time eruption of a fiery liquid mass, it is likely that by now the visible side of the Moon would have had a different appearance. Speaking about this, we proceed from the fact that the Moon is a planetary body that evolves in the past, present and future tense.
Why such a character of the "seas" and their placement on the visible side is a deep question and no less voluminous than the one under consideration.
Now the component is known, it will become clear why the moon is pear-shaped.
1. The forces of gravity hold the lunar core in the out-central region.
2. The processes taking place around the lunar core affect the surface of the hardened shell in the form of lava outpourings, like an increase in the thickness of the lunar crust. This phenomenon does not take place on the reverse side.
3. The influential role of centrifugal forces is not on the core, but on the substance of which the shells and the selenosphere are composed.
4. And finally, the weak force of the lunar attraction in comparison with the earthly one.
And now about the level of placement of monthly "seas" relative to the continents.
Monthly "seas" are cooled lava. Let's try to approach this issue reasonably. The fact that the crust underwent critical tension during the movement of the nucleus, and began to rupture, has already been considered. Through all the breaks, lunar matter began to rise in molten form. The huge amount of this is indicated by the large space flooded with it. How thick should the layer of the cooled substance be if it occupies a sufficiently large space? Here, one should also take into account the conditions in which the eruption took place. Vacuum and space. This means that it is absolutely impossible to assume about some kind of thin layer, it is not with lukewarm water that spreads on the floor at room temperature. The thinness of the layer indicates a small amount of erupted lava. Can it spread out in space in a thin layer for many hundreds of kilometers from the eruption site? No, it cannot: a small amount of mass with a small supply of heat would immediately be caught in the cosmic cold. But, apparently, this did not happen. It turns out that there was such an amount of molten lava and with such a supply of thermal energy, which was enough to keep the substance in a fiery liquid state until it occupies a certain space according to its volume. To this, one should also take into account the rate of the eruption. And it was rather stormy and short-lived. But this still does not fully reveal the nature of the lunar "seas".
Translation from Як утворились моря і океани на Місяці
