Supernovas are extremely powerful explosions of radiation. A supernova can release as much energy as a Sun during its lifetime. A star releases most of its matter when it undergoes this type of explosion. The explosion of a supernova can also contribute to the creation of new stars. There are two types of ways to trigger a supernova. The first trigger is the result of a white dwarf accumulating material from a companion. This causes the dwarf to reach a core temperature too high to survive, causing an explosion. The second trigger occurs when a star's nuclear fuel dwindles and can no longer support the release of nuclear energy. If the star's core is large enough, it will decay and become a supernova. Most observations of a supernova are made through spectral lines. The classification agrees with the physical classification, because large stars are made mainly of hydrogen, while white dwarf stars are simple. White dwarfs have a bare environment because the explosion of the original star was so large that the winds pushed the hydrogen away. A star explodes using gravitational collapses. When a star explodes due to nuclear fusion, it is because a large amount of mass has built up in its core and it cannot support its weight. Neutrons are the only elements in nature capable of stopping a heart implosion. When a white dwarf undergoes a supernova, the energy comes from the uncontrolled fusion of carbon and oxygen in the core. After a supernova, the nucleus is likely to travel elsewhere in space. When the core is smaller than about 5 solar masses, neutrons stop the collapse of the star. This will create a neutron star. Neutron stars are observed as pulsars or X-ray binaries. When the core is very large, none of the middle of paper......ions occur. Supernovas release many of the elements we have today, including hydrogen and heavier elements like iron. Supernovas also play an important role in the creation of new stars, because the aftermath of the explosion creates an elemental environment suitable for new interstellar reactions. Discovering a supernova was difficult at first, since most occur far from our galaxy, but new technologies now allow scientists to discover many supernovas in many galaxies. Works Cited Thompson, Andrea. “What is a supernova?.” Espace.com. Np, and Web. November 13, 2013. Nave, R. “Supernovae”. Hyper physical. Np, and Web. November 13, 2013. “Supernovae.” Supernovae. Np, and Web. November 13. 2013. .