Curiosity

Defination

The American Heritage Dictionary of the English Language, 4th edition defines curiosity as:

A desire to know or learn.
A desire to know about people or things that do not concern one; nosiness.
An object that arouses interest, as by being novel or extraordinary: kept the carved bone and displayed it as a curiosity.
A strange or odd aspect.
Archaic. Fastidiousness.

noun

Mental acquisitiveness: curiousness, inquisitiveness, interest. Idioms: thirst for knowledge.
Undue interest in the affairs others: curiousness, inquisitiveness of, investigate. Informal nosiness, snoopiness.

After observe couple of resource ,it can be summary as :

Curiosity is actively exploring your environment, asking questions, investigating possibilities, and possessing a sense of both wonder and doubt.

Why Curiosity Is Important

Curiosity is an important trait of a genius. I don’t think you can find an intellectual giant who is not a curious person. Thomas Edison, Leonardo da Vinci, Albert Einstein, Richard Feynman, they are all curious characters. Richard Feynman was especially known for his adventures which came from his curiosity.

But why is curiosity so important? Here are four reasons:

It makes your mind active instead of passive
Curious people always ask questions and search for answers in their minds. Their minds are always active. Since the mind is like a muscle which becomes stronger through continual exercise, the mental exercise caused by curiosity makes your mind stronger and stronger.

It makes your mind observant of new ideas
When you are curious about something, your mind expects and anticipates new ideas related to it. When the ideas come they will soon be recognized. Without curiosity, the ideas may pass right in front of you and yet you miss them because your mind is not prepared to recognize them. Just think, how many great ideas may have lost due to lack of curiosity?

It opens up new worlds and possibilities
By being curious you will be able to see new worlds and possibilities which are normally not visible. They are hidden behind the surface of normal life, and it takes a curious mind to look beneath the surface and discover these new worlds and possibilities.

It brings excitement into your life
The life of curious people is far from boring. It’s neither dull nor routine. There are always new things that attract their attention; there are always new ‘toys’ to play with. Instead of being bored, curious people have an adventurous life.

Curiosity helps you clarify problems, ideas, and situations, and it encourages you to explore how they could be different. Actively exploring the environment, asking questions, investigating possibilities, and possessing a sense of wonder are all part of being curious. Questions are key. Once you open up to the nuances of life, it's easy to find things that fascinate you and to begin wondering "why?" and "how?"

Questioning takes you to deeper levels of knowing and helps you relate to others. When you develop heightened curiosity, you improve the quality of your life by asking better questions and being receptive to new ideas. The desire to expand your understanding motivates you to go beyond the surface. You learn more because you have a desire to know more. When you approach an idea, person, or situation with a heightened sense of curiosity, your natural tendency is to "quest" for additional information

Another advantage of being curious is that your brain is designed to reward you for exploring fresh ideas and trying new activities. When you experience novelty, your brain produces more dopamine -- an important brain chemical that lifts your mood and increases your sense of wellbeing.

John Glenn talk about Curiosity :