wonders-of-the-cosmos: A protoplanetary disk is a rotating circumstellar disk of dense gas and dust surrounding a young newly formed star, a T Tauri star, or Herbig Ae/Be star. The protoplanetary disk may also be considered an accretion disk for the
tags: Mola!,
from: https://www.tumblr.com/blog/view/siquemola/190971145432
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