In 2010, scientists obtained an image of an asteroid that was dangerously close to Earth. Which technology did the scientists likely use to capture the image?

A radio telescope detects radio waves coming from objects in space, so it is the listed technology that could be used to observe an asteroid. MRI creates images of objects inside a scanner, while submarine communication and GPS have different purposes and do not capture images of asteroids. The correct choice is “radio telescope, because it captures radio waves from space.”

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