I'm trying to explain dark matter to my three year old daughter, and she goes "Why don't those silly scientists just shine a bright light on it?"
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I'm trying to explain dark matter to my three year old daughter, and she goes…
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Ha ha.. Perfect point!
Not a bad idea.  In a sense, that's what needs to be done.  You probably need to meet +Brian Brushwood and his daughter Penny.  She's 8 years old and can explain String Theory better than anyone else can!
"We haven't yet found a light bright enough to see it."
Dark matter doesn't interact with light, the light just goes straight past it.