What's the difference between yellow stars and red stars?

Gist Color of star depends on temperature which in turn depend on mass. We find that small stars are cool (less than 3000°C) with a red-ish appearance, whereas big heavy stars are hot (over 30,000°C), and have a blue-ish glow. read more

A red star just represents how many evolutions it went through. If you see a card with a red star, it means that it has evolved once. If you see 2 red stars, that card went through extreme evolution (evolved twice) The yellow star represents the card's grade. read more

The study of stars is an incredibly interesting pastime. Two interesting bodies are red and blue giants. These giant stars are huge and bright. They are different, however. read more