That is why the sky remains dark during the day. In space, the atmosphere does not interfere. Meanwhile, our natural satellite reflects enough light. And during the day, sunlight is simply too intense compared to such weak sources of radiation as distant stars. The matter is that our eyes adjust to a certain level of illumination. It is blue because our atmosphere partially scatters sunlight, and mainly shorter wavelengths are affected by this process - that is, the blue and violet parts of the visible spectrum.īut the color of the sky does not preclude us from seeing the Moon during the day! Moreover, under certain circumstances, even Venus, Mars and Jupiter can be seen with the naked eye in the daytime sky (if you know where to look for them). No, not because the sky is too light at this time. The explanation should begin with the question of why we do not see the stars during the day here on Earth. A typical photograph of space in which no stars are visible. To understand why this is so, one must start with the fact that blackness of the sky does not always mean the possibility of seeing stars. It almost always looks starless.Ĭonsequently, many conclude that they are not visible in space at all, and ask the question: why? In fact, stars are seen by astronauts every day, but they are very rarely represented on pictures. Those pictures clearly show that the sky is always dark there. Most people on Earth judge what space is like by the pictures taken by astronauts in flight. Meanwhile, astronauts see them regularly and extremely clearly, but only under certain conditions. In photographs taken from the surface of the Moon or from Earth orbit, the sky appears completely black, and only now and then a star is visible.
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