Finding a big hole in the Sun
America space agency, NASA, announced that a very large black hole has been observed on the Sun's surface. Although this is a very big hole, but scientists say that the sun is not cold and not explodes. So there is no need to worry! These types of holes or coronal are located in areas with low density in the solar atmosphere. Sun's atmosphere called coronal. Because they have less solar materials, their temperatures are lower than the surrounding material and look much darker than around. The coronal holes are visible in some specific types of UV rays. This type of radiation is not visible by unaided eye and is seen only by the color purple. According to the Huffington Post, NASA said the coronal holes, which sometimes remain weeks on the solar atmosphere can cover up to a quarter of its surface. Coronal holes are source of high speed solar particles winds that sometimes have three times higher speeded than conventional wind from the sun. These solar storms can disrupt satellit...