How does the appearance of a comet change as it moves around the sun?

As it approaches the Sun, the foggy spot increases in size; near the Sun from a foggy central spot called the head of a comet, a huge tail unfolds, directed in the direction opposite to the Sun.

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.