Its glowing gas (formerly the star's outer layers) was expelled over 2200 years, forming a butterfly-shaped structure over two light-years wide!
Credit: NASA, ESA, and J. Kastner (RIT)
Its glowing gas (formerly the star's outer layers) was expelled over 2200 years, forming a butterfly-shaped structure over two light-years wide!
Credit: NASA, ESA, and J. Kastner (RIT)