Why we can accurately detect stars billions of light years away, but we can’t confirm if we have a 9th planet in our solar system?
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There was a recent scientific paper exploring the possibility that Planet 9 is a primordial black hole (one formed in the early universe) that got caught up in the Sun’s gravity. A black hole about the size of a golf ball would weigh several times the mass of the earth and would be able to produce the gravitational effects that make us suspect planet 9 exists.
I suspect that finding a golfball with an orbit larger than Pluto’s would be hard enough, now make it one that absorbs all light. Tricky tricky.
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