Planetary Nebula -- Part 2 to Part 6
space·@mars9·
0.000 HBDPlanetary Nebula -- Part 2 to Part 6
<html> <p> This type of nebula is formed when the star ages and advances in age, burns all its hydrogen and becomes helium at its center. Helium is also converted into carbon and oxygen. Nuclear reactions reach the end in the center of the star, while helium continues to burn in the outer crust</p> <p>This causes the star to expand and enlarge in size and become the outer layers of the star is unstable because of it and lose the star mass in the form of strong star winds, and this imbalance causes the expulsion of the important part of the mass of the star from the layer that extended and remains the heart of the star is very hot and becomes a small star in the center of the nebula, with the High Aqh</p> <p>This type of short nebula may last for several thousand or tens of thousands of years and then dissipate. The star will cool and turn into a white dwarf. This type of nebula has no relation to the planets but is known by this name because it is seen in small telescopes such as planets. planetary within 5 billion years</p> <center>http://www.alkoon.alnomrosi.net/nebula/nebimages/NGC6543Gr.jpg</center> <p>%95 Of the stars we see in our Milky Way galaxy will eventually become planetary, including the Sun, and the other 5% of the stars, those with a mass of more than eight times of our Sun, will end their lives as a coupernova.<br> The term "planetary nebula" is an old name and has no relation to the planets, but it is a mistake in naming. This name appeared more than a century ago when the binoculars used at the time were small. They happened to see the nebula as a round, green-colored object. I thought it was like a planet influenced by their view of the planet Uranus.<br> In any event, planetary nebulae were not made of the planets, and there are no visible planets within this nebula, which have nothing to do with planets. It is rather the gaseous substance and dust that has been expelled from a star who has aged at age before his death. The best name for this nebula is the "evils of expulsion", as they are drawn out of smoke, such as smoke emitted from a burning ember</p> <p><strong>The end of the sun is a planetary nebula</strong></p> <center>http://www.alkoon.alnomrosi.net/nebula/nebimages/EmissionNebula.jpg</center> <p>The sun produces all its heat like any star inside it, in the center, this heat warms the earth and protects the sun from the collapse of the attraction inside. The fuel used by the sun or any star is hydrogen, where hydrogen nuclei are converted into helium, producing that enormous heat<br> In five billion years, hydrogen fuel will run out into the sun, and the net helium will almost stay. Gravity will force the depressed heart to contract and compress it and become warmer and warmer than before. These high temperatures will ignite helium ash and result in carbon nuclei and increased temperature rise. And there will be a second release of heat and be violent and stormy, increasing the impact of lighting the surface of the sun a thousand times. During that period, the heat causes the outer layers of the sun to inflate the so-called red giant<br> This red giant will swell and expand so that the orbits of both the Mercury and Venus planets are within this expansion. It will happen that both sunrise and sunset on Earth will take a few hours, and the sun will appear bright red and huge to fill half the sky. Water in the oceans will boil, evaporate and leak into outer space with the atmosphere. Acute radiant heat will transform the surface of the earth into a thick layer as solid as pottery. In the sense that the earth will turn into hell with which life is impossible in any form.<br> Helium does not last long, and in less than a few hundred million years, after helium is transformed into non-combustible carbon, the star's heart suddenly halts (in thousands of years), the current star mass (about a million degrees) Per teaspoon of tea) and become a ball in like the size of the ground. This remaining ball is called a white dwarf<br> During the final stages, the outer layers of the sun will begin to collapse toward the center at home, but the base material will ignite as it is going inward, causing the external surface to malfunction. In the end, about 40% of the sun's mass will be released into space, spread through the solar system and beyond. The outer layers will continue to separate deeper and deeper layers into clusters of spherical bubbles, which may eventually form in the form of a giant halo. Which is observed from afar in the form of a nebula, is a planetary nebula.<br> When that process ends, the former sun's heart appears as a white dwarf through a curtain of the expelled material. The active light emitted from the white dwarf will interact with the electrons of atoms within the gas cloud formed, leading to the appearance of the nebula in its brilliant colors</p> <p> image source <a href="http://www.alkoon.alnomrosi.net/nebula/nebimages/Protostar.jpg"> </a><a href="http://www.alkoon.alnomrosi.net/nebula/nebimages/NGC6543Gr.jpg">1</a> <a href="http://www.alkoon.alnomrosi.net/nebula/nebimages/EmissionNebula.jpg">2 </a></p> <p><a href="https://steemit.com/space/@mars9/nebula-is-the-birthplace-of-stars-part-1-to-part-6"> Nebula is the birthplace of stars -- Part 1 </a></p> <p>Planetary Nebula -- Part 2 The Post has been added </p> <p>Emission Nebula -- Part 3 </p> <p>Reflection Nebula -- Part 4 </p> <p>Dark Nebula -- Part 5 Supernova Remnants -- Part 6 </p> </html>