What makes something mysteries and what makes people to solve

The complications and unknown facts make something mysterious and the curiosity pertaining to the mystery makes people solve it.

Explanation:

The things that appear mysterious also have science behind them. Once the science behind the mystery is discovered, the concept no longer remains a mystery. The science behind mysterious things is often complex and requires multiple probes and investigations solely dedicated to the demystification of the concept that appears to be a mystery. Many concepts that we are associated with in day-to-day life are still a mystery. One such mystery is gravity.