What is the correct order of star colors from hottest to coolest? white, yellow, red, blue
yellow, orange, white, red
red, orange, yellow, blue-white
blue, white, yellow-white, orange

The answer is blue, white, yellow-white, orange.

Explanation: These are the two basic reasons for different star colors:

Temperature – cooler stars are red, warmer ones are orange through yellow and white. The hottest stars shine with blue light

Age – As a star ages it produces different chemicals which burn at different temperatures. We can use a star’s color to show its relative age