Notable supernova remnants

Supernova remnants (SNRs) are the ejected debris of supernova explosions from dying or dead stars. SNRs form expanding shells, bows, or bubbles of highly-engergized gas and interstellar material that are swept up in the shock wave. Supernovae generate most of the heavier elements in the periodic table as a result of the intense pressures and temperatures from the explosion. Supernovae are of two primary types:

Type Ia supernova - caused by exploding white dwarf stars after they feed too much from a binary companion star over time until they reach critical mass. Often the white dwarf is obliterated afterward.

Type II supernova - caused by the gravitational core-collapse of high-mass stars that stop generating fusion in the core, collapsing inward under gravity, then exploding outward, leaving a neutron star or black hole.

Manatee Nebula II Aquila
W44 II Aquila
W49B II Aquila
3C 58 II Cassiopeia
Cassiopeia A II Cassiopeia
Tycho's Nova Ia Cassiopeia
G292.0+01.8 II Centaurus
G306.3-0.9 Centaurus
SN 185 Ia Circinus
Bat Nebula II Cygnus
Cygnus Loop II Cygnus
Eastern Veil Nebula II Cygnus
Veil Nebula II Cygnus
Western Veil Nebula II Cygnus
LMC N49 II Dorada
SN 1987A II Dorado
Tarantula Nebula II Dorado
Kesteven 75 II Eagle
Jellyfish Nebula II Gemini
SN 1006 Ia Lupus
RCW 103 II Norma
Kepler's Nova Ia Ophiuchus
Puppis A II Puppis
G1.9+0.3 Sagittarius
Sag A East Sagittarius
G350.1-0.3 II Scorpius
Crab Nebula II Taurus
Spaghetti Nebula II Taurus
E0102 II Tucana
Vela Junior II Vela
Vela SNR II Vela