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The Expected (And Now Measured, at Least for Halley's Comet)

Question 21

Multiple Choice

The expected (and now measured, at least for Halley's Comet) size of the nucleus of a typical comet is about:

A) 10⁶ km.
B) 10⁷ km.
C) 10 km.
D) 100 m.

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