An unusual x-ray signal from the Helix Nebula, first detected in 19180, could stem from a star destroying a nearby planet.

The Helix Nebula is one of the closest and most remarkable examples of a planetary nebula*. It lies in the constellation of Aquarius (The Water Bearer), about 700 light-years away from Earth.

The Helix Nebula, NGC 7293, lies about 700 light-years away in the constellation of Aquarius (the Water Bearer). It is one of the closest and most spectacular examples of a planetary nebula.

Helix's central star once resembled the Sun, but its outer layers of gas and dust sloughed off. The resulting planetary nebula, located some 700 light-years from Earth, is what telescopes now see.

The Helix Nebula, NGC 7293, is not only one of the most interesting and beautiful planetary nebulae; it is also one of the closest nebulae to Earth, at a distance of only 710 light years ...

A new photo snapped by the European Southern Observatory's Vista telescope shows the Helix Nebula, a planetary nebula located about 700 light-years from Earth in the constellation Aquarius.

A newly released image of the planetary nebula taken in infrared light brings into view what normally can't be seen in visible light. Anne Dujmovic was a senior editor at CNET. Her areas of focus ...

The Helix nebula, located about 700 light-years away in the constellation Aquarius, was formed when a star much like our Sun died and sloughed off its skin, or outer layers.

The Helix Nebula is one of the closest and most remarkable examples of a planetary nebula. Cosmic beauty: An unusual view of the Helix Nebula taken by the ESO's VISTA telescope in Chile.