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Name: Ron Reil
Status: N/A
Age: N/A
Location: N/A
Country: ID
Date: 1993 - 1999
Question:
I have a student who asked how long the tail of Halley's Comet was at the time of its closest approackh to the sun during its 1985-1986 visit. I have have searched without success for the answer. Any help would be greatly appreciated.

Replies:
Sorry, I don't know the answer specifically for Halley's 1985 apparition, but in general comet tails can be as long as 1 AU ! (an Astronomical Unit is the distance from the Earth to the Sun, 92 million miles)

Hawley


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