First of all we need to know that there are actually “water droplets” that are equal to or larger than the Earth’s moon in space, there are several moons of Jupiter and Saturn, including Europa and Enceladus, but Europa is surrounded by water and ice with ice in the middle, and Enceladus is much smaller than our moon, but its amount of ice and water is relatively large. In addition Pluto, once one of the nine planets, smaller than the moon is also largely composed of water ice.
Europa is the sixth satellite, in orbit from the inside out of Jupiter. Europa was discovered by Galileo Galilei and Simon Marius in 1610. These two scientists may have discovered this satellite simultaneously and independently. Of the four major satellites of Jupiter discovered in 1610, Europa is the smallest.
Enceladus is Saturn’s sixth largest satellite. It was discovered by the astronomer William Herschel in 1789. Before the 1980s, very little was known about Enceladus other than that there was water on the surface of the satellite. Enceladus is about 500 km in diameter, one tenth the size of Titan, Saturn’s largest satellite.
So, what happens when these “water droplets” fall to the ground? Perhaps a lot of people will think that this is the same disaster as Earth in the age of the dinosaurs. But in practice this association is still not very correct, because the asteroid that fell to the ground was only 10 km in diameter, and of the asteroids mentioned above, Enceladus is asteroid. with the smallest size, it has a diameter of more than 500 km.
Affected by the Earth’s gravitational acceleration, these giant “water droplets” will be accelerated to about 11.2 km / s no matter how far they fall from space, so if a moon-sized drop of water falls, maybe you can also imagine what will happen to us.
However, some people may say that these moons and asteroids are not real water droplets, if there are water droplets the size of the moon they may not have a celestial phenomenon. jelly.
In physics, the acceleration of gravity is the acceleration caused by gravity on an object. Like speed, gravitational acceleration is a directional quantity. Ignoring the friction caused by air resistance, according to the principle that every small body subjected to acceleration in a gravitational field is the same with respect to the center of mass. This is true regardless of the different masses of objects and their composition.
Even so, what is the difference between purely water asteroids at 11.2 km / s and other falling objects? The diameter of the moon is more than 3,400 km. When the water droplets gather and reach such a large size, they will also be spherical under the effect of gravity. When they fall to Earth, it is certain that this collision pushes a large amount of matter into orbit, perhaps similar to the impact of Theia and Earth in the past.
Theia is the name of a hypothetical planet that, according to the large crash hypothesis of the formation of the Moon, collided with Earth about 4 billion years ago. This impact with the impact angle was just sliding through but enough to destroy Theia, its iron core buried in the original Earth.
But there are also some who will assume that such drops will fall to the ground like rain, and maybe it will be a flood. The Earth’s atmosphere is about 80 km high and the diameter of the water droplet with the size of the moon is 3,400 km and it is certain that this idea is completely impossible.
In fact, if there are really moon-sized water droplets falling to the ground, what you should do at the time is pray that there is some mysterious force that causes it to fall slowly, not directly. collide at high speed.
However, even so, perhaps it is useless because the volume of the moon is 22 billion cubic kilometers, while the total amount of seawater on Earth is only 1.34 billion cubic kilometers, the amount of water falling on Earth. Soil would be 16 times the total amount of water in the oceans, so this collision was not simply a flood. It would be a huge amount of water that destroys and engulfs everything. All soil on the Earth’s surface will be washed away. Whether it’s Mount Everest or the entire continent of Australia, all tectonic plates will be crushed and global earthquakes will follow one after another, volcanoes all over our planet will never stop erupting.
Earth’s surface area is only 510 million square kilometers, and when a moon-sized drop of 22 billion cubic kilometers of water falls on our planet, that means a layer of water 44 kilometers thick will. spread on the surface of the Earth.
The Earth will become a sphere with a purely water surface, so earthquake and volcanic activities will only occur under water. And the Earth’s surface will be relatively calm.
For humans, it is estimated that no one will survive, and so will other organisms, the survivors could be some marine plankton, and all Earth’s living system will begin to evolve again.