The schoolboy argued with the teacher about the universe.
The boy drew a large rocket, multicolored stars and the Sun with rays. The very space between the cosmic bodies he left white. But what exactly did not like the teacher – is unknown.
The father of the boy was interested in the conditions under which the cosmos may look the same as in the figure.
I understand that the teacher can answer that the child “sees” and represents space, and this will be true, but it became interesting, under what conditions or in what constellations space can look like the picture. It’s a childish question, but an adult.
In Roskosmos, the man was told that the stars really are of different colors and the teacher is not right. According to the department, the teacher first of all did not take into account the laws of physics and optics, and also denied the child “the right to own vision of the world.”
The human eye is designed in such a way that it recognizes colors, based on the degree of excitation of certain segments in the eye, responsible for the perception of red, blue and green spectra.
Since the stars radiate in a very wide spectrum, we often perceive only a mixture of these colors (green + red + blue = white). In fact, the stars are blue, and white, and yellow, and orange, and red.
As an example, Roskosmos gave a photo of cosmonaut Gennady Padalka, on which he captured a starry sky and a comet from the ISS.
The camera perceives the light emission spectra in a slightly different way. If you zoom in on the photo, you will see red, blue and yellow stars – only a small particle of the color splendor of the far space.