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 ...

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 ...

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.

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." ...

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 ...

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 ...