What suggests the debris shed by 3200 Phaethon differs from typical cometary dust streams?

Answer

The debris is thought to be denser.

One theory attributes the brightness and abundance of the Geminids to the debris originating from Phaethon being packed more densely than the material released by icy comets.

What suggests the debris shed by 3200 Phaethon differs from typical cometary dust streams?

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