What did Halley record?
A transit of Mercury across the Sun
A Lunar eclipse
A Solar eclipse
A Soyuz rocket launch
Answer
Halley recorded a transit of Mercury across the Sun, a rare astronomical phenomenon where the planet Mercury passes between the Sun and the observer, appearing as a small, dark silhouette moving across the solar disk. This observation contributed to our understanding of planetary motion and the precise measurement of astronomical events during Halley's time.
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