At the beginning the solar system was a whirlpool of gas and dust. Little by little the small remains of matter were joined with larger ones. After millions of years the planets were formed.
Courtesy of Universe SandBox2 - Captured by the author of this publication.
Its distance to the sun is between 46 million km and 70 million km, becoming the planet closest to the sun.
Courtesy of Universe SandBox2 - Captured by the author of this publication.
It is too small to generate a strong gravitational field, necessary to retain an atmosphere, this means that it is unprotected against the celestial bodies.
Having no atmosphere is impossible to transmit some kind of sound, for example if you are on Mercury you could not hear a volcano erupting, so there is complete silence.
Gravity depends on the mass of an object, the greater the mass the greater the gravity. Since the mercury gravity is so weak, if you weigh 68 kg on Earth, you would only weigh 25 kg in mercury.
Mercury is a dead planet that has been this way for more than 4 billion years. But to be an almost lifeless planet mercury still has some movement. Baptized by the ancient Romans, in honor of the messenger god. Mercury orbits the sun in just 82 Earth days, faster than any planet.
But when it comes to the time it takes to turn on its own axis, the planet holds the record of being the slowest. Its duration is 182 terrestrial days, almost half a year on earth. That is, one day has more days than a year. It sounds strange, right? but it is like this.
The gravitational force of the sun creates a friction within mercury that reduces its speed by turning on its axis. That means that a year on Mercury is shorter than a day on the planet.
For 6 months, the side exposed to the sun reaches 425掳C and the other side falls to -185 掳C, ice can exist in craters.
It is formed by solid rock, has a core rich in iron like Earth. This nucleus is as big as the Moon. The size of Mercury is 60% smaller than that of the earth, with 4880 km it is the smallest planet of the so-called "inner planets".
In the following images we can compare its size with the Earth, the moon and our star.
Courtesy of Universe SandBox2 - Captured by the author of this publication.
Courtesy of Universe SandBox2 - Captured by the author of this publication.
Courtesy of Universe SandBox2 - Captured by the author of this publication.
Surface
Very similar to our Moon, Mercury is full of craters. Mercury has seen millions of asteroids and meteorites explode on its surface, as it has no atmosphere to protect it. This makes mercury the planet with the most craters in the solar system.
Countless impacts of meteorites and asteroids have left scars on mercury in the form of dents and crater rings. Today the planet looks beaten, it looks like a terrestrial corpse.
We know that our Moon is a little smaller than Mercury, which would happen if an object the size of the Moon hits Mercury. What characteristics would you change?
Let's first write down some Mercury data that the Universe SandBox application gives us, before seeing the collision of these two bodies.
Mercury before the collision |
|---|
| Mass: 4.49 moons |
| Radius: 2440 km |
| Density: 5.43g/cm3 |
| Temperature: 179 掳C |
| Rotating speed: 25.7 m/s |
| Magnetic field: 0.191 gauss |
Mercury after the collision |
|---|
| Mass: 5.49 moons |
| Radius: 2631 km |
| Density: 5.29g/cm3 |
| Temperature: 1290 掳C |
| Rotating speed: 184 m/s |
| Magnetic field: 0.191 gauss |
After the collision the planet changed completely from appearance, to one more aggressive and dangerous. Several physical characteristics changed, after the impact its mass increased approximately 18% and its radius 12%. The mass of the Moon merged with that of Mercury.
Its temperature obviously increased a lot, approximately 720%. The planet that seemed calm, now looks like hell. Probably that's how it looked during his training.
The Moon has a diameter of 3474 km, when hitting Mercury caused the speed of rotation to accelerate, increasing more than 700% of its speed before impact.
As we could see in the video, the shock caused the fragments detached from both bodies to shoot out through space, but they fell again. If before this planet had craters, now much more.
Until a next post!
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