As an expert in astronomy, I can tell you that the colors of stars are determined by their surface temperatures, with the color spectrum ranging from red to blue as the temperature decreases from the hottest to the coolest stars.

Hottest to Coolest Colors of Stars:

1. Blue - These are the hottest stars with temperatures above 25,000 Kelvin.

2. White - Stars with temperatures around 10,000 to 25,000 Kelvin are considered white.

3. Yellow - Our Sun is a yellow star, with temperatures around 5,500 Kelvin.

4. Orange - Cooler stars, with temperatures around 3,500 to 5,000 Kelvin, appear orange.

5. Red - The coolest stars are red, with temperatures below 3,500 Kelvin.

The sequence from hottest to coolest is Blue, White, Yellow, Orange, and Red.

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In general, a star's temperature determines its color, from red to blue-white. Spectral types are named with a letter: M, K, G, F, A, B and O. M stars are the coldest stars and O stars are the hottest. The closest star to the Earth, the sun, is a class G star.read more >>