Assertion: spirograph nebula | /r/CreatedBy | shock fronts
Facets:
value: in the stellar wind
type: LOCATION
value: probably
type: DEGREE
Source sentences:
text: Spirograph Nebula (IC 418) in Lepus constellation and NGC 6826 in Cygnus – had fainter X-ray emissions, probably produced by shock fronts in the stellar wind emanating from the central star.