M2-9 is a striking example of a "butterfly" or a bipolar planetary nebula. Another more revealing name might be the "Twin Jet Nebula." If the nebula is sliced across the star, each side of it appears much like a pair of exhausts from jet engines. Indeed,
M2-9 is a striking example of a "butterfly" or a bipolar planetary nebula. Another more revealing name might be the "Twin Jet Nebula." If the nebula is sliced across the star, each side of it appears much like a pair of exhausts from jet engines. Indeed,
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Keywords: astronomy, bygone, camera, field, historic, history, hst, hubble, hubblespacetelescope, nasa, nebula, planetary, planetarynebula, space, telescope, wfpc, wide, widefieldplanetarycamera
