The Celsius or centigrade scale runs from -273 deg C to you name it.
0 deg C is the freezing point of pure water
100 deg C is the boiling point of water.
15,000,000 deg C is the core temperature of the Sun
The Kelvin scale (K) uses the same units. -273 deg C = 0 deg K.
0 deg K is also known as absolute zero, the point at which no further heat energy can be extracted from a system
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Its Kelvin temperature. The Kelvin scale starts at absolute zero and goes up. Absolute zero on the celsius scale is -273.15oC
The coldest possible temperature on the Celsius scale is -273.15 degrees.
There are four units for temperature: Celsius, Kelvin, Fahrenheit, and Rankine. The Kelvin scale is the same as the Celsius scale, just with the zero point being absolute zero. The Rankine scale is the same thing for the Fahrenheit scale. ■
On the Fahrenheit scale. Water freezes at zero on the Celsius scale.
Minus 273 degrees Celsius is the coldest possible temperature, a.k.a. "absolute zero".