Van Gonzalez

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The universe is pervaded with microwave radiation – the afterglow of the Big Bang. Its temperature is about 2.7 kelvin, which means 2.7 degrees above the coldest possible temperature, absolute zero, or about 270 degrees Celsius colder than the freezing point of water. Only very unusual circumstances can make anything colder than those microwaves. Nothing in the universe is known to be cooler than about one kelvin – except in certain physics laboratories on Earth. There, the record low temperature achieved is below one billionth of a kelvin. At those extraordinary temperatures, the glow of ...more
The Beginning of Infinity: Explanations That Transform the World
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