The remainder of the stellar atmosphere that the supernova blows away into interstellar space. Astronomers see spectral emission of elements processed in the late stages of stellar evolution, like nitrogen, oxygen, and neon. The material is still hot and rushes through space at hundreds of kilometers per second.
The remainder of a star's atmosphere that is blown away into interstellar space by a supernova. Astronomers tend to see emission lines of elements such as nitrogen, oxygen, and neon in supernova remnants. These elements, which are processed in the late stages of stellar evolution, are still hot and rush through space at hundreds of kilometers per second.
The expanding gaseous shell ejected by a supernova explosion.
a major source of energy for the interstellar medium
The expanding shell of gas from a supernova and the swept-up interstellar gas and dust that the shell pushes along and with which it intermingles.
SNR The debris left by a supernova. Supernova remnants can often be seen by radio telescopes. Some are detectable thousands of years after the original star exploded.
The expanding shell of gas from a supernova explosion.
An expanding cloud of debris produced by a supernova. If this cloud is irradiated by the remnant neutron star, molecular gases in the debris cloud are ionized and glow. The Crab nebula, M1 in Taurus, is perhaps the best known supernova remnant.
The remains of a star visible as an expanding nebula of gas that have been ejected at high speed by a supernova explosion.
The expanding glowing remains from a supernova. [More Info: Field Guide
An expanding shell of gas ejected at high speeds by a supernova explosion. Supernova remnants are often visible as diffuse gaseous nebulae usually with a shell-like structure. Many resemble "bubbles" in space.
an expanding and slowly fading shell of gas violently ejected during a supernova explosion
The glowing gaseous remains of a star that has exploded as a supernova. Crab Nebula (Supernova remnant)
leftover gas from a supernova explosion
Expanding gas cloud from the outer layers of a star blown off in a supernova explosion; detectable at radio wavelengths; moves through the interstellar medium at high speeds.
The remains of a supernova, namely glowing debris scattered over a light-year or more.
A vast cloud of dust and gas left over from an exploding star.
A supernova remnant (SNR) is the structure resulting from the gigantic explosion of a star in a supernova. The supernova remnant is bounded by an expanding shock wave, and consists of ejected material expanding from the explosion, and the interstellar material it sweeps up and shocks along the way.