Kastner emphasizes that this explanation is still speculative, but the nebula's central ionized cavity does bear the evidence of such jets in its structure. Other ring-shaped planetary nebulas ...

Planetary Nebulae (PNe) are emission-line nebulae in a short-lived late stage of stellar evolution for low- to ...

The Helix Nebula is an example of a planetary nebula. Though it looks like a bubble or eye from Earth's point of view, the Helix is actually a trillion-mile-long tunnel of glowing gases. In its center ...

They show an unprecedented level of detail of a doughnut-like structure of glowing ... "We can use the Ring Nebula as our laboratory to study how planetary nebulae form and evolve." ...

Astronomers studying the site of a supernova seen 843 years ago have captured an image of the strange filaments left behind by the stellar explosion.

A small telescope will already reveal the characteristic donut-like structure of glowing gas that gave the Ring Nebula its name. The Ring Nebula is a planetary nebula - objects that are the colourful ...

Helix Nebula: When a star like the Sun runs out of fuel, it expands and its outer layers puff off, and then the core of the star shrinks. This phase is known as a “planetary nebula" Thanks For ...

This close-up, visible-light view by NASA's Hubble Space Telescope reveals previously unseen details of the Ring Nebula. The Hubble observations reveal that Ring Nebula's shape is more complicated ...