SOLAR SYSTEM

Detailed explanation-1: -The surface temperature of a star determines the color of light it emits. Blue stars are hotter than yellow stars, which are hotter than red stars.

Detailed explanation-2: -The colour provides a fundamental piece of data in stellar astrophysics-the surface temperature of the star. The hottest stars are blue and the coldest are red, contrary to the use of colours in art and in our daily experience.

Detailed explanation-3: -A star’s colour is related to its surface temperature. The shorter the wavelength of light emitted by a star, the hotter it is. Blue or blue-white light with shorter wavelengths is the hottest. Cooler colours have longer wavelengths, such as red or red-brown.

Detailed explanation-4: -But blue light carries more energy than red light, which means it needs a hotter radiation source to produce it. This explains why blue stars are hotter than red stars, and also has a down-to-earth consequence if you’ve ever seen metal being heated up in a forge.

Detailed explanation-5: -The greater the intensity of a star, the more energy and heat it emits. Thus, it produces wavelengths that are shorter. Because light is a form of electromagnetic radiation, in the visible light spectrum, this translates to hotter stars appearing blue, and cooler stars appearing red.

Detailed explanation-6: -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.