May 4, 2025
Science

Why are there no green stars when there are blue, red and yellow stars in the sky?

  • November 14, 2024
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Stars usually appear white, but sometimes it is possible to see red, blue or yellow stars. What about green? Bride, the answer to this question Let’s give it.


Stars usually appear white, but sometimes it is possible to see red, blue or yellow stars. What about green?

Bride, the answer to this question Let’s give it.

If you look at the night sky, you will see that stars come in different shapes and sizes.

The most common color on these celestial bodies is white, but also blue, red and They also shine in yellow tones. But look at the sky as much as you want or examine it in detail with a telescope, it is impossible to find a green star. The reason for this is not because stars emit green light, but because your eyes cannot see it.

Stars look different when they burn at certain temperatures, just like fire. For example, the coldest stars appear red, while the hottest stars appear red. It appears to be in shades of blue. But in fact, no star shines in one color.

Stars emit different wavelengths that represent different parts of the color spectrum.

However, your eyes cannot perceive all these wavelengths separately. Instead, the most dominant light is the color whose wavelength we see. So where are the green stars?

Average-temperature stars generally emit green photons, but they are not that color. When you see not just a star, but something that produces so many blue, green, red and yellow photons at the same time, your eyes process it as white.

Therefore at average temperature green stars appear white. Plus, purple is another color you won’t see in the night sky. The reason for this is that your eyes perceive blue better than purple.

In summary, there are actually green stars in the sky, but our eye structure It does not allow us to see stars of this color.

Sources: Mental Floss, Science Focus

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