Why Do We See Space as Dark? – News

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Why Do We See Space as Dark?  - News



Betül Apaydın asked in the ‘Those who are curious about space’ column, and Ali Damra Baştanık answered.

Betül Apaydın asked in the ‘Those who are curious about space’ column, and Ali Damra Baştanık answered.

I would like to ask a question about another topic completely unrelated to this topic. Universe Why do we see the universe as dark, even though it contains billions of stars and planets?

Ali Damra Baştırık: First of all, I would like to point out that the reasons why we see space as dark have many paradoxes. But if we need to talk about the most logical and explainable one, we can say the Doppler effect.

First of all, let me talk about what the concept of seeing is; We can explain the concept of vision as the reflection of light in different intensities, colors and forms from the surfaces of the objects around us, as a result of the stimulation of the sensory cells in the eye, as a signal to the visual center in our brain and the interpretation of these signals by our brain. The light sources we know in space are stars like the Sun.

Since the light sources emanating from the stars cannot reflect in the vacuum of space, our brain cannot make a visible interpretation. There are many invisible rays in visible light outer space, for example Gamma rays, X rays, Infrared Rays (Infrared), Ultraviolet Rays (Ultraviolet) etc. Since our eyes cannot perceive these rays, space is seen as dark and colorless. In addition, since the width of the universe is towards infinity, it is present in light sources whose rays cannot reach our world. It is known that the wavelength extension of the lights is parallel to the universe in direct proportion.

It is said that the reason for the wavelength extension of the light is the distance of the star, which is the light source, with the expansion of the universe. We call this effect the Doppler effect. If you are wondering about all the possible paradoxes Tubitak You can learn about them from scientific sources and satisfy your curiosity.

WHO IS ALI DAMRA BAŞTANIK?

The 25-year-old Baştanik is from Ankara. The young astronomer, who graduated from the University of Turkish Aeronautical Association, Aerospace Engineering, did an internship at TUBITAK for 2 terms. “I have been involved in many projects socially and technically by developing myself as satellite software and remote sensing in my field,” said Baştanık. says.

Source: Space Mag Turkey


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