GENERAL KNOWLEDGE

Detailed explanation-1: -Yellow stars are hotter than red stars. White stars are hotter than red and yellow. Blue stars are the hottest stars of all.

Detailed explanation-2: -Red stars are cooler than the sun, with surface temperatures of 3, 500 K for a bright red star and 2, 500 K for a dark red star. The hottest stars are blue, with their surface temperatures falling anywhere between 10, 000 K and 50, 000 K. Stars are fuelled by the nuclear fusion reactions at their core.

Detailed explanation-3: -The hottest stars tend to appear blue or blue-white, whereas the coolest stars are red. A color index of a star is the difference in the magnitudes measured at any two wavelengths and is one way that astronomers measure and express the temperature of stars.

Detailed explanation-4: -The hottest known star, WR 102, is one such Wolf-Rayet, sporting a surface temperature more than 35 times hotter than the Sun. Like Baskin-Robbins, Wolf-Rayet stars come in a variety of flavors.