Assertion: horsehead nebula | /r/SimilarTo | the pillars of creation in m16
Facets:
value: in m16
type: TEMPORAL
Source sentences:
text: The Horsehead nebula is similar to the Pillars of Creation (in M16), though perhaps not as dense; one day it too will be eroded by the intense UV from the young stars in its vicinity, and from new-born stars formed within it (the bright area at the top left is light from just such a star).