Question

give a brief note on Hailey's comet .

Answer 1

many comets are known to appear periodically..One such comet is Halley's Comet, ehich appears after nearly once every 76 years . It is named after Edmund Halley,who calculated its orbit.It was last seen in 1986..Halley's Comet will be visible again in 2061-2062..

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