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if your talking about getting to "absolute zero" then, no, its not possible. we have attained -273 Celsius or -459.4 Fahrenheit. which is pretty close to -273.15 Celsius/-459.67 Fahrenheit (the supposed number of absolute zero). but it is impossible to remove all the heat from an object. something colder must exist to transfer the heat to, but since absolute zero is as cold as it gets it is unattainable.