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The Veil Nebula is a vast emission nebula located in Cygnus. It represents the expanding remains of a star explosion, specifically the supernova associated with the Cygnus Loop. This remnant, formed approximately 10,000 to 20,000 years ago, exhibits intricate filament structures and intense radiatio...
Cassiopeia A is a supernova remnant expanding within the constellation Cassiopeia. It represents the spectacular death of a massive star that occurred around the late 17th century. The nebula emits intense radio waves and X-rays, making it a valuable object for astronomers studying stellar evolution...
The Vela Supernova Remnant represents the expanding remains of a star’s death approximately 8,000 light-years away. This remnant is particularly significant due to the presence of the Vela pulsar, a rapidly rotating neutron star. Scientists study this SNR to understand supernova mechanisms and extre...
The SN 1006 Supernova Remnant represents the expanding cloud of gas and dust created by a star’s violent death approximately 1,000 years ago. This remnant, located in the Lupus constellation, is notable for being one of the most prominent and well-studied supernova remnants. X-ray observations revea...
The Spaghetti Nebula, formally Simeis 147, is a delicate supernova remnant located within the constellations Taurus and Auriga. It’s notable for its intricate, thread-like structure resembling strands of spaghetti—a visual consequence of expanding gas and magnetic fields. This filamentary nebula, pa...
Tycho’s Supernova Remnant represents the expanding cloud of gas and dust created by the explosion of a star approximately 500 years ago. Observed by Tycho Brahe, this remnant – officially designated SNR G347.3–0.2 – is notable for its prominent X-ray emission. Astronomers study it to understand supe...
The Kepler’s Supernova Remnant represents the expanding cloud of gas and dust created by the explosion of a star observed in 1604. This historic event, designated SN 1604, was one of the last supernovae visible to the unaided human eye. Located within the Ophiuchus constellation, it’s notable for pr...
The Jellyfish Nebula, formally IC 443, represents the expanding remains of a supernova explosion within the Gemini constellation. This nebula is notable for its complex structure formed by interactions with surrounding molecular clouds and speculation regarding a central neutron star. Astronomers an...
W49B represents the expanding debris field of a long-dead star located in the Aquila constellation approximately 33,000 light-years from Earth. This supernova remnant is particularly interesting due to its irregular shape, suggesting a complex explosion mechanism possibly involving jets. Astronomers...
N49 is a supernova remnant in the Large Magellanic Cloud, a satellite galaxy of the Milky Way. It is observed at optical, radio, infrared, and X-ray wavelengths, where its expanding shock interacts with uneven surrounding interstellar material and produces a complex filamentary structure. N49 is als...
W44 is a mixed-morphology supernova remnant located in the constellation Aquila, estimated to be roughly 20,000 years old. It is characterized by a combination of a radio shell and thermal X-ray emission contained within its boundaries. The remnant is physically associated with the pulsar PSR B1853+...
The Monoceros Loop is a massive, faint supernova remnant located in the northern part of the constellation Monoceros. First identified in 1963 through radio astronomy observations, the structure is characterized by its enormous angular diameter of roughly 220 arcminutes. It is an aging remnant of an...
RCW 86 is a large supernova remnant in the southern constellation Circinus, approximately 8,200 light-years from Earth. It is widely associated with SN 185, a transient 'guest star' recorded by Chinese astronomers in 185 CE, making it one of the oldest supernovae for which a written record survives....
N132D is an oxygen-rich supernova remnant in the Large Magellanic Cloud, a satellite galaxy of the Milky Way. It is a strong X-ray source whose expanding debris contains enhanced oxygen and other elements produced inside the massive progenitor star before its explosion. Astronomers study N132D acros...
Puppis A is a supernova remnant located in the northern part of the constellation Puppis, approximately 7,000 light-years from Earth. The explosion that created the nebula is estimated to have occurred roughly 3,700 years ago, and the expanding cloud of gas continues to glow in X-ray and radio wavel...
G1.9+0.3 is a supernova remnant located near the center of the Milky Way galaxy in the constellation Sagittarius. Discovered through combined radio and X-ray observations, it was identified in 2008 as the youngest known supernova remnant in our galaxy, with an estimated age of around 100 years at th...
The Gum Nebula is a large emission nebula spanning a wide area of sky across the constellations of Vela and Puppis. It is named after Australian astronomer Colin Gum, who catalogued it in his 1955 survey of southern HII regions. The nebula is among the largest emission nebulae known and encompasses...
CTB 80 is a complex supernova remnant located in the constellation Cygnus, characterized by its unusual structure of three extended radio-emitting arms. It is physically associated with the energetic millisecond pulsar PSR B1951+32, which has a rotation period of 39.5 milliseconds. The nebula repres...
SNR 0540-69.3 is a supernova remnant located in the Large Magellanic Cloud, a satellite galaxy of the Milky Way. It is structurally similar to the Crab Nebula and is notable for containing a central, rapidly rotating pulsar with a period of approximately 50 milliseconds. The nebula consists of a cen...
CTB 1 is a large, faint supernova remnant in the constellation Cassiopeia, identified through radio observations in 1960. It consists of an expanding shell of material produced by a stellar explosion and is also visible at optical wavelengths, especially through emissions from ionized oxygen and hyd...
N63A is a supernova remnant located within the Large Magellanic Cloud, a satellite galaxy of the Milky Way. The structure was created by the explosive death of a massive star, sending an expanding blast wave into the surrounding interstellar medium. Astronomical observations indicate that this energ...
HB 21 is a large supernova remnant in the constellation Cygnus, first identified as a radio source in 1953. It is classified as a mixed-morphology remnant, with a shell-like appearance at radio wavelengths and centrally concentrated thermal X-ray emission. Observations indicate interaction between t...
