Question

which is largest ray (back line) of comets

please tell me fast​

Answer 1

The Ulysses spacecraft unexpectedly crossed the comet's tail at a distance of more than 500 million km (3.3 AU) from the nucleus, showing that Hyakutake had the longest tail known for a comet. Hyakutake is a long-period comet. It was discovered by Yuji Hyakutake in March 1996.

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Answer 2

Explanation:

nucleus

The nucleus is the main, solid part of the comet. The nucleus is usually 1 to 10 kilometers in diameter, but can be as big as 100 kilometers. It can be composed of rock. The coma is a halo of evaporated gas (water vapor, ammonia, carbon dioxide) and dust that surrounds the nucleus.