## How to know the universe through ideas?

We live in the world of definitions and meaning, our knowledge about physics, mathematics and other sciences depends upon our understanding about Formulas, equations and definitions of terminologies. If we want to talk about a star or a body and explore its properties, (scientific properties for that matter), we have to know its mass .To talk about mass means, we should know the scientific connotation of this term and unless we know it ,we cannot use the term mass as the subject matter of our thoughts . As defined the mass is defined as follows: In physics, the property of matter that measures its resistance to acceleration. Roughly, the **mass** of an object is a measure of the number of atoms in it. The basic unit of measurement for **mass** is the kilogram. The atoms in a body determine it’s mass.