Moon was never a word I worried about defining or looking up when I read about them.
Reposted from
Phil Plait
Y'know, we argue over the definition of "planet" a lot.
But… we don't even have one *at all* for "moon".
What makes a moon?
www.scientificamerican.com/article/what...
🔭🧪
But… we don't even have one *at all* for "moon".
What makes a moon?
www.scientificamerican.com/article/what...
🔭🧪
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