Assertion: twin jet nebula | /r/HasProperty | minkowski’s butterfly
Facets:
Source sentences:
text: Twin Jet Nebula, Minkowski’s Butterfly, Butterfly Nebula,
text: It is also known as Minkowski 2-9 (M2-9), Minkowski’s Butterfly or the Wings of a Butterfly Nebula.
text: Twin Jet Nebula (Minkowski’s Butterfly) –