Nebula

Nebula

An interstellar cloud of dust, hydrogen, helium and other ionized gases is called nebula. Basically nebula was the designation for any diffuse astronomical object, including galaxies other than Milky Way.
A nebula may be formed either by supernova explosion when the gases released by the explosion are diffused by the low frequency electromagnetic radiations caused due to the explosions. These diffused ionized gases illuminate under the visible wavelength.

Another type of nebula is formed when gases collapse under their own gravitational pull. A massive star is formed at the center and its radiation causes the surrounding gases to shine.

 In easy language, a nebula is a huge collection of dust and gas in the free space. It is bound together due to its own gravity and has a fading luster.

Nebula forms very beautiful shapes and colors in the space.

Related Articles: Astronomical Unit, Supernova, Red Giant, Exotic Star, Black hole, White Dwarf, White hole, Flipping of Solar Magnetic Poles, Space-time

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