ESO's Visible and Infrared Survey Telescope for Astronomy (VISTA) has captured this unusual view of the Helix Nebula (NGC in this space wallpaper. The Helix Nebula is a planetary nebula located 700 light-years away.
This object, called the Helix nebula, lies 650 light-years away in the constellation of Aquarius. Also known by the catalog number NGC it is a typical example of a class of objects called planetary nebulae. Discovered in the century, these cosm
A sun-like star in the late white-dwarf stage of its life blows out a huge gas bubble that glows with colors stemming from the ultraviolet light of the star. Ionized hydrogen glows red, and towards the center, doubly ionized oxygen appears green.