Question

5.What is astar?What does the colour of the star indicate?​

Answer 1

Answer:

The color of a star mostly indicates a star's temperature, and it can also suggest the star's age. Class O stars, which are blue in color, are the hottest, and class M stars, which are red in color, are the coldest.

Answer 2

Explanation:

A star is a luminous ball of gas, mostly hydrogen and helium, held together by its own gravity. Nuclear fusion reactions in its core support the star against gravity and produce photons and heat, as well as small amounts of heavier elements.

Stars have different colors, which are indicators of temperature. The hottest stars tend to appear blue or blue-white, whereas the coolest stars are red.

A star's color is critical in identifying the star, because it tells us the star's surface temperature in the black body radiation scale. The sun has a surface temperature of 5,500 K, typical for a yellow star. ... The hottest stars are blue, with their surface temperatures falling anywhere between 10,000 K and 50,000 K.