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What machine measures the distance between us and a black hole?
Wiki User
∙ 10y ago
There is no special machine that measures that directly. Astronomers have to observe objects known to be close to the black hole (most black holes observed are part of a binary or multiple system, simply because those are easier to detect), and use one of the usual methods used in astronomy to calculate distances.
Wiki User
∙ 10y ago
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