Ep. 677: The Answer is Always Dust
Astronomy Cast
00:00
The Gas Dust Boundary
Once you start saying we're seeing polycyclic aromatic hydrocarbons, is that necessarily a gas? No, not really. That's a really, really big molecule. And so the question becomes exactly at what point do you say that molecule is sufficiently complicated that we're going to refer to it as dust?" "I think a lot of people gloss over what is the boundary between these two things by looking at an amino acid," he says.
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