Assertion: pulsar | /r/HasProperty | the most accurate clocks
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text: Although pulsars have led to new insights on timekeeping (pulsars are the most accurate clocks known) and the forces that cause earthquakes (by using pulsars to determine how radiotelescopes move, you can map the motions of Earth's crust), and may someday lead to totally unpredictable advances, that is not the reason why people do it.