BBC Sky at Night Magazine on MSN
We've spent billions searching for dark matter and still haven't found it. Why are scientists obsessed with finding something they can't see?
If dark matter is invisible and can't be detected, why are scientists spending so much time and money searching for it?
Dark matter is an elusive, untouchable substance that binds galaxies together. A shadowy signal could signify the first time a particle has ever been detected.
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