The onset of puberty and the onset of menopause are examples of age.

Biological  age.

Explanation:

Your biological age is that based on the quality of your body. It is the set of conditions of your biological device. It is related to the aging of cells and is a consequence of physical and mental habits and defines their quality of life. It is defined by your mood, health, disposition, etc. The biological age is also defined by the common physiological changes in the human organism, an example of this is puberty and the onset of menopause.

blue stars have the highest surface temp

stellar distances are usually expressed in light-years

the measure of a star's brightness is called magnitude

hope this !