Why Is Space Extremely Cold Despite The Sun?

Every day we feel the warmth of the Sun, which is 150 million kilometers away from us. Why is space so cold when the sun is so hot? To learn the answer to this question, there are two terms that we must first know the difference between: heat and temperature.

Heat is a form of energy that depends on the amount of matter, while temperature is just a measurement. Heat; When transferred to an object, the temperature of the object rises, and when removed from the object, the temperature of the object decreases. These transfers also take place in different ways.

How does heat transfer occur in objects?

This heat transfer occurs in three ways: conduction (conduction), convection (convection) and radiation (radiation) aspect.

• Conduction type heat transfer in solids we’ll see. When the particles that make up solids are heated, their vibrations increase. In this process, heat is transferred from warmer particles to colder ones by striking each other. This type of heat transfer is the cause of what burns our hands after an iron stick or an iron spoon you hold on fire comes into contact with something hot.
• If convection type in liquids or gases we witness. When the fluid is heated, the molecules rise and carry the heat energy with it. For example, the heaters in our rooms work with this type of heat transfer principle.
• Unlike these two processes, the radiation path is heat, light waves spreads with All objects emit thermal energy radiation at a certain level depending on their temperature. At room temperature, it emits heat in the form of infrared waves, including us. In this way, the temperature of people can be measured with thermal cameras. That is, matter does not occur with particles, but with waves.

That’s why the sun D150 million km from earth Although the Sun’s energy reaches the Earth.

Heat is a matter of matter.

NASA

Space is a vacuum in which no matter exists. It is impossible to talk about heat transfer by conduction or convection. in space because there are not enough particles Naturally, we cannot talk about a heat transfer. This transfer seems possible through a single radiation. When the sun’s heat in the form of radiation falls on an object, the atoms that make up the object begin to absorb energy, and this energy moves the atoms, producing heat as the atoms vibrate.

The temperature of objects in space does not change for a long time.

To put it simply, when there is nothing to heat, the temperature remains the same, it does not change. Even if a rock is heated until it boils by the sun’s rays, it will eventually cool down again. That’s the heat in empty space disappears because it cannot be transferred to anything. The answer to our question arises: Space is actually very cold, as it has nothing to absorb energy from the Sun.

We don’t need to go to outer space to feel this difference.

NASA

The sunless side of the Earth is comparatively colder. But still, thanks to the atmosphere of our Earth, it is fortunately compared to other celestial bodies that do not have an atmosphere. not close to absolute zero. Otherwise we wouldn’t be able to talk about life.

Let’s take Earth’s satellite as an example. Temperature on the constantly sunny surface of the Moon It is around 127 degrees. But on the dark side of the Moon, the temperature drops to -173.

So what is the temperature of space?

Scientists for the warmth of space -270 degrees They say it’s just an average temperature. According to research, it is also known that different parts of space have different temperatures.

from the sun as there is nothing to absorb the energy that’s why space is so cold despite the scorching Sun!