proplyd

Jan. 29th, 2010 07:32 am
prettygoodword: text: words are sexy (Default)
[personal profile] prettygoodword
proplyd (PRO-plid) - n., (abbr.) protoplanetary disk.


That is, a rotating disk of dense gas surrounding a young star, out of which planets will be (or are being) accreted. Wikipedia has a decent rundown. I'm kinda guessing at the pronunciation here, but I love that it looks like it's a microscopic multicellular critter but actually is something much, much larger.

---L.
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