Why Do Astronomers Seek to Measure Gravitational Waves Simultaneously with at Least

question 27

Multiple Choice

Why do astronomers seek to measure gravitational waves simultaneously with at least three detectors?

• A) in order to measure their amplitude
• B) because the waves evolve as they pass through Earth
• C) because the waves have wavelengths much larger than Earth
• D) in order to pinpoint the direction of their source

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