Currently the nature of the country is quite cold. At this time, the southern hemisphere of the Earth is much further from the Sun than at other times of the year. Also, the Earth is tilted at an angle of 23.5 degrees with respect to its axis of rotation. The southern hemisphere receives less sunlight at this time of year due to its tilted position.

Space is cold

That is, the days are shorter. The length of the night increases. As a result, the surface cannot be heated enough. But after a few days, the southern hemisphere of the earth will move closer to the sun again in the month of June-July. As a result, the length of days and intensity of heat will increase. In extreme heat, the fields will burst and become chauchi.

From a distance of about 15 million kilometers, the sun leaves the earth. The question is, why can't the sun sweat the space even with this condition of the earth? That is why space is not warm? Why is it always cold?

As we know, space is cold. very cold On average, the weather there is 2.7 Kelvin or minus 270.45 degrees Celsius. On the other hand, the sun is very hot. However, there are temperature differences at different levels. For example, the temperature of the center of the sun is about one and a half million degrees Celsius. And the temperature of the surface or photosphere is only 5,500 degrees Celsius. Again, a little outside the photosphere, that is, the corona or the outermost region, the temperature rises to about 350 million degrees Celsius.

So the question naturally comes, why is space not warm? This paradoxical question usually arises from thinking of the sun as a ball of fire. We often assume that, just as the heat of a fire heats something, the Sun heats the Earth or other planets in the same way. But the reality is not like that. Planetary satellites in particular do not warm this way. In addition to heat, various types of radiation play a major role in this.

Not all of the heat we feel sitting on Earth comes in the form of thermal energy from the Sun. As I said, various radiations emitted from the sun are responsible for this heat. Almost the entire spectrum of electromagnetic waves is emitted from the Sun. Visible light is one of them. Different particles of Earth's atmosphere and crust interact with them. Heat is generated from there. Thus we constantly produce heat. Like in a microwave oven. There the water particles are set in motion by short wavelength waves. And heat is generated due to the movement of particles. Due to this, even though the sun is far away, the earth is very hot.

Since the number of atoms in space is almost zero, there are not many interactions. Heat is also not generated much from radiation. As a result, the temperature in the vacuum of the solar system is very low. For the same reason, even though there are billions of stars in space, the temperature is very low. But don't feel cold when you get close to the sun on a boat. Because the temperature around the sun is not very high. But when exposed to the sun's rays, you will feel the heat. That is, a substance will heat up when exposed to radiation.

The Parker Solar Probe is the closest man-made probe to the Sun to date. In October 2023, the spacecraft will pass within about 7.2 million kilometers of the Sun. At this time, the spacecraft recorded a temperature of about 1,400 degrees Celsius. But it was the temperature outside Parker. The internal equipment was at normal temperature. That is close to 25 degrees Celsius.