Planetary nebula
Videos
A planetary nebula is a type of emission nebula consisting of an expanding, glowing shell of ionized gas ejected from red giant stars late in their lives.
Some famous planetary nebulae
X-ray/optical composite image of the Cat's Eye Nebula (NGC 6543)
Two cameras aboard Webb Telescope captured the latest image of this planetary nebula, cataloged as NGC 3132, and known informally as the Southern Ring Nebula. It is approximately 2,500 light-years away.
NGC 6326, a planetary nebula with glowing wisps of outpouring gas that are lit up by a binary central star
Emission nebula
Videos
An emission nebula is a nebula formed of ionized gases that emit light of various wavelengths. The most common source of ionization is high-energy ultraviolet photons emitted from a nearby hot star. A
Planetary nebula
…A planetary nebula is a type of emission nebula consisting of an expanding, glowing shell of ionized gas ejected from red giant stars late in their lives. The term "planetary nebula" is a misnomer…
Planetary nebulae, represented here by the Ring Nebula, are examples of emission nebulae.
Emission nebula LHA 120-N 55 in the Large Magellanic Cloud.
Hubble image of emission nebula NGC 2174.
Hubble image of emission nebula NGC 2313.