Deep inside a mountain in central Italy, scientists are laying a trap for dark matter. The bait? A big metal tank full of 3.5 tons (3,200 kilograms) of pure liquid xenon. This noble gas is one of the ...
Read the travelogue of a xenon atom as it journeys from the air we breathe to a dark-matter detector a mile underground. Sure, I was born inside the blast of a supernova. But what element doesn’t have ...
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