planetary nebula

New Cosmic Mystery: Butterfly Nebulae Align

Astronomers have stumbled on a cosmic mystery surrounding some of the most beautiful objects in our galaxy.  New deep-sky images of the Milky Way’s central core reveal picturesque butterfly-shaped gas clouds left behind by dying stars called bipolar planetary ...

New Cosmic Mystery: Butterfly Nebulae Align

Astronomers have stumbled on a cosmic mystery surrounding some of the most beautiful objects in our galaxy.  New deep-sky images of the Milky Way’s central core reveal picturesque butterfly-shaped gas clouds left behind by dying stars called bipolar planetary ...