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a scientist wants to analyze signals from outer space. Her lab has sensors to dect sound waves, radio waves, and seismic waves. Which of these sensors will provide the best information?

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The correct answer is "radio waves".

In fact, sound waves and seismic waves are mechanical waves, which means they are waves which move through a medium, but space is basically vacuum, so there is no medium and they cannot propagate through vacuum. Instead, radio waves are electromagnetic waves, which can also propagate without a medium, so radio waves can also propagate through space.
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