Assertion: flame nebula | /r/HasProperty | ionized
Facets:
Source sentences:
text: The Flame Nebula (NGC 2024) is a beautiful emission nebula in the constellation Orion that is ionized and caused to luminesce at visible wavelengths by the easternmost star in Orion's Belt, Alnitak (Zeta Orionis).
text: It is part of the Orion Molecular Cloud Complex, a larger region of nebulosity that also includes the famous Horsehead Nebula, the Flame Nebula, the emission