Physics
The natural science that studies matter, its motion and behavior through space and time, and the related entities of energy and force.
"The important thing is not to stop questioning. Curiosity has its own reason for existence. One cannot help but be in awe when he contemplates the mysteries of eternity, of life, of the marvelous structure of reality. It is enough if one tries merely to comprehend a little of this mystery each day." – Albert Einstein