…showed first 75 words of 1191 total…

…showed last 75 words of 1191 total…in stars produces a force that pushes the material in a star outward. However, the gravitational attraction of the star's material for itself pulls the material inward. A star can remain stable as long as the outward pressure and gravitational force balance. The properties of a star depend on its mass, its temperature, and its stage in evolution. Stars have an amazing history on how they are sorted by astronomers into different types and categories.