The consequences of the fall of an asteroid or comet depend on their size and mass. If the body diameter is more than 1 km, then this can lead to a global environmental disaster. If the dimensions are smaller, then the destruction will not be as fatal. Craters are formed at the site of the fall, fires may occur, buildings will be destroyed. If the place of the fall is a forest, then a significant fall of the forest will occur.
Remember: The process of learning a person lasts a lifetime. The value of the same knowledge for different people may be different, it is determined by their individual characteristics and needs. Therefore, knowledge is always needed at any age and position.