The Wonders of Stars and Constellations

Stars are well-known celestial bodies made of plasma, undergoing thermonuclear fusion. They form in cold, dense gas clouds in space. Stars vary in size, color, and lifespan, with the sun being a yellow dwarf. Constellations are patterns of stars associated with mythological figures, created by ancient cultures. Stars' characteristics, such as color and size, help determine their age and lifespan.

Describe the different classifications of stars based on their sizes.

What role do constellations play in the understanding of stars?