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![]() Absolute zero is equal to zero Kelvin, which is equal to -273☌ or -460☏.īoth the sun and Earth's surface behave as blackbodies. All objects actually emit radiation if their temperature is greater than absolute zero. ![]() For example, when a stovetop burner reaches 1,000 Kelvin (K) - 726° Celsius (C) or 1,340° Fahrenheit (F) - it will glow red. When an object is hot enough, you can see the radiation it emits as visible light.
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