How old are the stars
How old are the stars?
Have you ever wondered what the age of stars will be? Do they also take birth and die?
 |
| STAR- NEBULA |
How can you tell a stars age?
Sun Has spent 5 billion years of his 10 billion years of age. He is in his youth. The age of our earth is also the same. The age of the universe is around 14 billion years, it was born in the same year as an initial explosion which has been named 'Bigbang'. How do astronomers estimate the age of stars and the universe? Astronomers generally cannot tell the age of a single star. There are some stars that we know are very young, very old, but most of the stars we cannot tell. Yes, when we have a large group of stars, we can easily tell its age. This is possible, because all the strings in a group or cluster are believed to have been born at about the same time. Relatively brief time Later (we have been talking here for thousands to millions of years) the stars arrive at the adult stage of their lives, which we call the main sequence phase or mainsquences'. The amount of time a star will spend in the main sequence phase depends on its mass. If we place the radian and temperature or radian and color of the stars of an asterisk group or cluster in a diagram called 'HR diagram', where 'HR' is the initials of the names of two scientists named Hertzsprung and Russell. One can determine the mass of stars that are ending in the first phase and moving on to the next phase of their life, the red monster phase. The higher the brightness of a star, the greater its mass is, so by computer models we can estimate the age of a star of such mass, which is at that point of its life, and that should be There will also be the age of the star group. In some cases this method also gives inconsistent results. For example, if it is placed on the oldest asteroid groups in the Milky Way galaxy, then their age is more than the age of the universe. The age of the universe is very clearly known from the data obtained from the Hubble Space Telescope.
What is the color of the youngest star?
 |
| STAR'SCYCLE |
Two types of asterisks are found in our galaxy or 'Milky'. The first type of clusters are called angular clusters of stars or 'globular clusters' because they appear as giant spheres ranging from a few thousand to a few million stars. Globular clusters are very old, and they are scattered not only in the interior of the galaxy but also around it. It seems that when our universe was very young, around the same time our galaxy was also forming. The second type of clusters was called 'galactic clusters' because we mainly find them within our galaxy, but they are now referred to as 'open clusters' because they are much more sparse than spherical clusters and their The stars are scattered - scattered. These open clusters can have from a few dozen to a few thousand stars. There is substantial variation in the age of sparse groups of stars. Some groups are very old and some have been formed recently. It seems that our galaxy started forming sparse clusters of stars soon after coming to their present size and this process continues even today.
Are older stars brighter?
In any type of star group, stars were made at the same time and from the same type of material. The characteristic of an asterisk group helps us to estimate its age is that stars of different masses are found in the asterisk group. When a group of stars is born, it contains many stars of the same size and mass as our Sun there will be many times more massive stars than our Sun and many other stars which are smaller and less mass than our Sun. A star spends about 90 percent of its lifetime glowing steadily because nuclear reactions taking place in the center of the star are converting hydrogen into helium, which emits large amounts of energy. This energy determines its path from the center of the star to the surface and is emitted from the star in the form of light. The larger a star is, the larger its furnace is, and the stationary phase of its life. That star becomes very hot and hot after a very bright star. The most massive stars are ultimately very bright and blue and extremely hot. Some of these small stars are of another white color with dim light. Stars like our Sun have a light yellow color of dull radiance but can still be called hot. But smaller stars than our sun are very dim in brightness, their radiance is red and they are relatively cold. During this steady period of its life there is almost no change in the brightness and temperature of the wire.
The size of the stars
What is the shape of a real star?
Makes us seem much dwarf compared to the Sun which appears to be larger. 109 Earths can be placed under the diameter of the Sun and about 12 lakh 60 thousand Earths can be contained in the volume of the Sun. If we consider the volume of such vast sun as one unit, then we will be able to compare it with the size of other stars. The brightest star in the Scorpio zodiac Scorpius constellation in the sky is Jyestha or Entrez. Its diameter is 800 times that of the Sun. That is, 800 x 800 x 800 can contain about 51 crore sun in its volume. It is a continental star. The diameter of the rajanya (rigel) star of the deer (oraian) planetarium is 78 times that of the Sun. Similarly, Rohini of Taurus (Taurus), (Aldebaran) 44 times, Swati (Arterus) 25 times of Bhoot (Bouties) planetarium, 8 times the brightest star of Gemini (Gemini), and the brightest star in the sky. Vyadh Sirius) has a diameter of 1.7 times that of the Sun. What a variety of sizes of stars!
 |
| STAR'S TEMPRATURE |
How is distance measured in space?
Distances of the planets, stars and galaxies of the solar system are known by various methods of distance measurement. In this context, there is talk of the movement of galaxies outward into the universe and the continuous spread of the universe. The most distant bodies of the universe, ie quasars, have been found at a distance of 14 billion light years. In astronomy, the farther we look, the more time we go backwards. Ie 14 billion light years away No quesar is its present form, we do not know anything about its present form, we can only say that this body looked like 14 billion years ago. In this way, the quasars proved to be not only remote to the universe, but also the oldest bodies. Looking at the migration phase of the galaxies today, we can easily guess that the universe would have been very small before today, go a little further in this sequence, so we can say that at one point 14 billion years ago And must have been born by its explosion or 'big-bang'. The question of what was there before that is unscientific because when we talk about the birth of the universe, not only matter but time also originated at that time. Hence the question of what was here before birth becomes unfounded.
Read it too.......
Post a Comment