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Where is the coldest point in the Universe?

The entire Universe is saturated with what is known as microwave background radiation, a remnant of the Big Bang. Microwaves are electromagnetic waves – just like visible light. However, microwaves have wavelengths between one metre and one millimetre (= one thousandth of a metre), while the wavelength of light lies between 380 and 780 nanometres (= one thousandth of one millionth of a metre)?

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