Researchers have long wondered why the Earth’s core remains solid, even though it is hotter than the surface of the Sun. The answer to this question lies in the peculiarities of the structure of our planet.
According to scientific data, the Earth’s core consists of two parts: the liquid outer core and the solid inner core. The outer core consists mostly of iron and nickel, while the inner core consists of iron with a few other elements.
So why does the inner core remain solid? The answer has to do with the pressure and temperature inside the Earth. The pressure at a depth of about 6,000 km is more than 3 million atmospheres, which causes iron to become solid. In addition, the temperature of the inner core is between 5,000 and 7,000 degrees Celsius, which also contributes to its hardness.
However, scientists continue to investigate this question and offer various hypotheses. For example, there is a theory that the presence of other elements in the inner core may contribute to its hardness. It is also thought that the presence of the Earth’s magnetic field may play a role in maintaining the hardness of the core.
Although the Earth’s inner core is not directly accessible to study, scientists use various methods to get information about its structure and properties. For example, they analyze data on seismic waves that pass through the Earth’s core.
In general, studying the Earth’s core is one of the most interesting and challenging tasks for science. It allows us to better understand the structure of our planet and its evolution.