How do we know the temperature of a star if it is millions of kilometers away? The answer is in the light. ✨ At the end of the 19th century, physicists discovered that every heated object emits radiation in a predictable way. As a material heats up, its light changes color: first reddish, then yellowish, and at extreme temperatures, whitish or bluish. Stars obey the same physics. They behave, with excellent approximation, like heated bodies radiating energy. When scientists break a star’s light
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Color and temperature of the stars. Stars are formed from clouds of gas and dust that, as they contract, heat up and radiate heat and light. But not all stars are created equal. We can establish relationships between the color we see and the temperature of a star. Check it out: Stars defined with colors Red stars Have surface temperature between 3,000°C; Orange stars - On the surface, its temperature is between 4,000°C; Yellow stars - Surface temperature of more or less 6,000°C; White stars - Ar
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