SOLAR SYSTEM

Detailed explanation-1: -Red stars are the coolest. 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: -Blue stars are hotter than yellow stars, which are hotter than red stars. A hot star like Sirius, with a surface temperature of about 9, 400 K emits more blue light than red light, so it looks brighter through a blue filter than through a red filter.

Detailed explanation-3: -Type O stars are the rarest and you may have already guessed the reason why. They’re typically very hot, very luminous and very massive, so they appear blue and tend to burn through their fuel very quickly and then explode.