Discovered in the 18th century, the Helix Nebula, located about 700 light-years away in the constellation Aquarius, belongs ...
Other ring-shaped planetary nebulas, such as the Helix Nebula (NGC 7293 in Aquarius), have also been shown to have bi-lobed ...
The Helix Nebula, also called NGC 7293, is a natural wreath surrounding a dying star. This breathtaking image of the Helix Nebula was captured by NASA’s Spitzer Space Telescope. The Helix Nebula is ...