There is a whole class of comets with a very small perihelion distance. Far from the Sun, they can be very faint, but near the perihelion their brightness increases greatly, often reaching negative magnitudes. At this time, they are close to the Sun, and during a total solar eclipse, there is the only opportunity to find these comets using conventional optics.
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.