A nebula is a structure consisting of gases, dust, hydrogen, helium, and other ionized gases in space and spread over wide areas. While it used to be the name given to standard celestial bodies, including galaxies, galaxy and nebula began to be used in different meanings with the advancement of astronomy.
A nebula is a star before it is formed. After this star grows, it becomes either a white dwarf neutron star or a black hole. Although the nebula concept is related to space science, the nebula has the feature of being distinguishable to the naked eye from the earth. Although nebula resembles a rainbow of colors in appearance, gas clouds formed in dark regions also need light to reach a rainbow of colors.
The temperature value of the gases in the nebula is approximately 15 thousand degrees. The gases in the nebula initiate a fusion reaction and thus begin to merge with hydrogen. This fusion process taking place in the nebula is also a harbinger of forming a new star here.
In those formed from supernovae, the gases are dispersed by various effects, and strange shapes are formed. But in a planetary nebula is symmetrical because the gases are not distributed. Whether a nebula is a planetary or supernova result can be determined by looking at it.
Many nebulas are diffuse galaxies, and they expand and expand without any boundaries. These nebulas are divided into three: dark nebula, emission nebula, and reflection nebula.
Neutron stars, which scientists interested in astronomy do not know much about, appear before nebula formation.
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