Shulou(Shulou.com)11/24 Report--

Since the International Astronomical Society downgraded Pluto from a planet to a dwarf planet in 2006, the nine planets in the solar system have become eight planets. According to the distance from the sun, the eight planets are Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus and Neptune.

Although the eight planets Pixabay have their own characteristics, they can be divided into three categories according to their different structures:

One is rocky planets, such as Earth, which are mainly made up of rocks, which are also called Earth-like planets. Mercury, Venus, Earth and Mars are all rocky planets.

The other is gaseous planets, such as Jupiter and Saturn, which are mainly made up of hydrogen and other matter. These planets are also called wood-like planets.

Another category of Pexels is icy planets, such as Uranus and Neptune, which are mainly made up of ice and other materials. These planets are also called sea-like planets.

Gaseous planets such as Jupiter and Saturn are very large, and Jupiter has a mass of about 1/1000 of the mass of the sun, which is much larger than the mass of the other seven planets in the solar system combined.

When it comes to gaseous planets, many people think that they are made entirely of gas, which is wrong. The so-called gaseous planets do not mean that they are made entirely of gases, but that they are mainly made up of hydrogen and helium, which exist in the form of gases at room temperature and pressure.

In fact, according to scientists' speculation, gaseous planets also have rocky solid cores. In fact, you can think that there is a rocky planet hidden inside the gaseous planet, but the atmosphere of this rocky planet is so thick that the mass of the atmosphere far exceeds that of the rocky body of the planet.

The asteroid belt between Mars and Jupiter divides the solar system into inner and outer solar systems. The reason why these four Earth-like planets within the asteroid belt do not have such a thick atmosphere as Jupiter and Saturn is mainly because the temperature in the region is high and the solar wind is relatively strong. Light gaseous elements such as hydrogen and helium can easily be evaporated into the outer solar system. Mercury, for example, closest to the sun, currently has only a bare rocky body.

Pixabay, what is inside a gaseous planet like Jupiter?

Although NASA has learned a lot about Jupiter through Galileo and Juno, two planetary probes dedicated to Jupiter. But what exactly is inside Jupiter, and what is the internal structure of Muli? Scientists are not very clear so far, and they can only give a prediction model in theory based on the information they have learned so far.

Data from the probe show that Jupiter is mainly composed of more than 80% hydrogen and about 10% helium, but these substances do not exist entirely in gaseous form. According to scientists' speculation, Jupiter should have a solid rock core, and the hydrogen that surrounds that rock core is as stratified as the Earth's atmosphere. It is speculated that gaseous planets such as Jupiter move outward from the rock core, followed by a thick atmosphere of metallic hydrogen, liquid hydrogen and gaseous hydrogen.

Rocky planets such as the moon and Mars can land on the surface with spaceships, so can humans land on gaseous planets like Jupiter?

Theoretically, the feasibility of landing is very low. A gaseous planet like Jupiter does not have a solid surface like a rocky planet. its outer layer is a thick atmosphere, which should be an ocean of liquid hydrogen under the atmosphere. Jupiter's ocean and atmosphere really connect the sea and the sky, because there is no obvious boundary between the two. If you drive a spaceship into the interior of Jupiter, you can't find the landing surface at all.

In 1995, NASA launched a probe into Jupiter's atmosphere, a sub-probe carried by the Galileo probe. The returned data show that the temperature and pressure inside Jupiter are extremely high, and the temperature in the depths of Jupiter is estimated to be as high as tens of thousands of degrees Celsius, much higher than that on the surface of the sun, and because Jupiter rotates so fast that it takes only 10 hours to rotate around, this leads to intense activity in Jupiter's atmosphere, and the intensity and frequency of lightning and storms are much higher than those of Earth.

Pixabay in short, the environment on Jupiter is so bad that the current human spaceship will be scrapped in less than a few minutes, and there is almost no possibility of landing. In theory, it is difficult for any material to withstand the pressure deep inside Jupiter. If humans want to explore Jupiter in the future, they can only launch unmanned probes to explore Jupiter's atmosphere for a short time.

This article comes from the official account of Wechat: scientific exploratory bacteria (ID:kxtsj9405). Author: Nansha startled Dream.

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