Is the solar system owned by light? Still black?

In the solar system, except the sunlight facing the sun, it is basically painted black. The farther the distance, the darker the sunlight. On mercury, the sun looks like a big fireball occupying half the sky; Seen from Pluto, the sun is no different from other stars in space. I think there is a place in your heart where the sun can shine, and the surroundings of that place will light up. This concept, but this is actually incorrect. Light travels in a straight line. If the light is not directed at the observer or camera, it needs to be reflected or refracted by the object to be observed or photographed. For example, even if the camera is placed near the sun, as long as the camera is not facing the sun and the sunlight does not enter the photosensitive element of the camera, the photos taken will be very dark (of course, a little from the dim starlight worn by other shining stars). The planet itself does not emit light, and the planet can appear in the photo because it reflects the sunlight to the camera. So the reason why the photo is not brightened by sunlight is that the camera is not aimed directly at the sun itself. Sometimes when the sun shines into the sea, a beam of light can be seen in the water because the density of the sea water is high and uneven, and the impurities in the water add up to refract the sun into our eyes. But space is a vacuum state with almost nothing, not to mention dust, not even a few atoms. In other words, nothing can reflect or refract sunlight to the camera. It must look black. In addition, the universe is theoretically infinite, and there is no so-called boundary. There won't be anything like a wall or a fixed plate in the depths of space to reflect sunlight back. Even if there are hundreds of billions of stars in the universe, because the universe is too big, no matter how many stars there are, they can only be sparsely distributed in the universe, and their distance is very far, so they can't "illuminate" the whole universe at all. Therefore, the "background" of space is always dark. I hope I can answer your question. Picture reference:. yimg/i/icon/ 16/ 1