How long do planetary nebulae last on average? What are some of the controlling factors? Doug Kaupa Council Bluffs, Iowa To understand how long a planetary nebula remains visible, we first need to ...

Planetary nebulae represent a brief, yet illuminating, phase in the evolution of low- to intermediate-mass stars. These glowing shells of ionised gas are shed in the late stages of stellar development ...

Gone are the days when the Ring Nebula looked sort of like a bagel, or a jelly doughnut, a massive astronomical blob holding the secrets of a dying star. The new images of the famous Ring Nebula from ...

A nebula is a luminescent giant cloud of dust and gas in space that could be from a supernova or could be a star-forming region. The "dumbbell nebula," also known as Messier 27, is what astronomers ...

Astronomers suspect there is at least one other star interacting with the material cast off by the central dying star in NGC 6072, creating the abnormal appearance of this planetary nebula. Credit: ...