Question

When was Halley's comet seen the last time? ​

Answer 1

Answer:

Halley's Comet is arguably the most famous comet. It is a "periodic" comet and returns to Earth's vicinity about every 75 years, making it possible for a human to see it twice in his or her lifetime. The last time it was here was in 1986, and it is projected to return in 2061..

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Answer 2

Explanation:

answer is in the attachment

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