Today, light halos appear around the sun and moon, caused by the presence of snow "crystals" in the upper atmosphere, and they usually recur in such a period of winter. The corona is a circle of light around the sun or moon, when thin clouds form, and contain quantities Very large of ice crystals, and it can be seen when the light is refracted or split, and also through its reflection from those ice crystals, expecting the corona to appear clearly, around the full moon, where you see when the moon appears sometimes from among the transparent clouds, which is one The few color effects that are seen with the naked eye, while it is difficult to see the same phenomenon that is formed around the sun due to the strength of the radiation. In a related context, the consultant ophthalmologist, Dr. Serene Joharji, warned of the danger of looking at the sun, noting that it does not mean that it is cold in the winter or afternoon hours, as the rays are not broken at all times, and it does not prevent the definition of the aura and solar phenomena as a general culture, with Providing an awareness dose that shows the danger of staring at the sun, especially children because of the transparency of their eyes, and adding that a fleeting gaze may be lighter and cause heat sting, harmful to the eyelid and eye, and if it is a risk that results are not calculated, and to warn of the danger of ignoring these facts, reminds us of the tragic accidents of young and old Blindness, due to focusing attention for limited minutes to the sun in the eclipse, for example, and others. The ophthalmology consultant explains that there is a failure to spread this culture, so dealing with health prevention methods is still impractical in many precautions and safety reasons, while exposure to sunlight for a long time, and its ultraviolet waves, is very harmful to the eye, meaning that we are facing an awareness message in Correcting information, especially towards children, because they are at risk and thus accustom them to sunglasses all the time, to reduce the cumulative effect of ultraviolet rays, and also to avoid exposure to the sun as much as possible, during the period of intense shining between ten in the morning until four in the afternoon, With care to use sunglasses for protection, and with convincing knowledge that prevention is better than cure. In a related context, the Astronomical Society in Jeddah indicated that the moon will move from the full moon stage to the first square before the end of next week, and appear this evening in the northeastern horizon, and in the coming nights the moon will rise about an hour late every day, and within a few days it will be seen only in The sky of dawn and early morning, and this time of the month is ideal for seeing the radiating craters on the surface of the moon, using binoculars or a small telescope, in addition to seeing the rest of the terrain that appears flat, because the entire moon falls in the sunlight, these radiating craters are deposits of bright reflective materials , Extending from the center of the craters outwards for hundreds of kilometers.