A supernova remnant is the structure left behind after a supernova explosion, where a star has ended its life in a violent explosion. The explosion disperses the outer layers of the star into space, creating a nebula of hot gas and dust. Supernova remnants often contain a mixture of elements like hydrogen, helium, oxygen, and heavier elements formed in the explosion. These remnants can be observed in the form of expanding shells of gas, often emitting X-rays or other forms of high-energy radiation, and they provide valuable information about the life cycle of massive stars.
- The remnants of a massive star that has ended its life in a violent burst.
- The shockwave from the explosion compresses surrounding gas and dust, creating complex structures.
- Crab Nebula (M1): The remnant of a supernova observed in 1054 AD.
- Puppis A: A remnant of a supernova explosion located in the constellation Puppis.
