The Size of the Coma,or Gas Cloud Surrounding the Comet

question 185

Multiple Choice

The size of the coma,or gas cloud surrounding the comet nucleus,as it reaches its closest point to the Sun can be as large as about:

• A) about 10⁵ km.
• B) about 10 km.
• C) about 10⁷ km.
• D) about 10⁶ km.

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