What is the planetary nebula?
The planetary nebula is a phenomenon that occurs when a small to middle star approaches the end of its life cycle. While very large stars end their life explosion of light called supernova, smaller stars gradually fades like gases and radiation education. The first planetary nebula was discovered in 1764 and has been found more than 2,000 since then, the most found in the Milky Way galaxy. The planetary nebula is thus named because the escape gases create a shape of a similar planet, but these celestial bodies do not have little to do with planets in a traditional sense.
Stars have an incredibly long life cycle and can take billions of years. During the life of the star, the process of nuclear fusion in the core, where hydrogen and helium atoms continuously connect. Over time, this fusion continues at a growing speed as it increases more and more hydrogen inside the star. Finally, the core begins to pump in the hydrogen of the outer layers of the star, resulting in a heavy instability that decomposesStar protective shell. This allows many natural gases found in the star to escape into the atmosphere, creating a kind of cloud around the core of the star.
The remaining nuclear fusion processes produce UV radiation that heats these surrounding gases. This heat causes gases to shine different colors and create a planetary nebula. This nebula can take many different forms depending on the type of gases it contains and the life phase of the star. Some are equipped with disks that resemble a planet, while others are accepted by a ring -like appearance around the core. Some are very unique and most are not round as a traditional image of the planetary nebula.
Within the period of 10,000 to 50,000 years, the gases around the core eventually disperse and go to space. Once they are gone away, the planetary nebula ceases to exist and only the core of the star remains. This core is known as a white dwarf and procedureM of time gradually disappears until it creates no light.
In addition to fascinating scientists and astronomers, the planetary nebula also plays an important role in the creation of new stars. When the old stars disappear, the gases they release first form a planetary nebula before they gradually postponed themselves into space. From there, these gases are building blocks for new stars, although this process happens very slowly for thousands or even millions of years.