Bok globules (2-50 solar masses) containing dense and recycled cosmic dust and gas (molecular hydrogen (H2), carbon oxides and helium, and around 1% (by mass) silicate dust) are visible in this close-up view of a tiny corner of the Rosetta nebula (image credit: Pete Richardson) via /r/spaceporn http://bit.ly/2vl02bH
via Tumblr http://bit.ly/2GnIEIE
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