How are stars sorted?

Classifying Stars Astronomers sort stars in a series of "bins" using these characteristics: temperature, mass, chemical composition, and more. Based on its temperature, brightness, and mass, the Sun is classified as a middle-aged star that is in a period of its life called the "main sequence".

the plateau is likely to turn into a desert do to corrosion.

c) up is the direction the magnetic force is acting on the charge.