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Why is Hally's comet visible from earth only once every 76 years? |
Answer» The only DIFFERENCE between their orbits is that the comet ORBIT is a LOT more ELONGATED or elliptical, while the planet orbit is more round. This is the reason why Halley's comet takes 76 years to come close to the sun again. It will start is journey towards the sun in 2023 and will now be visible in 2061. |
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