Astro Farsi Sally description of stars and astronomy
Today, Astro Farsi provided explanations on the subject of astronomy, which we will read next.
Astronomy is the science of observing and explaining events that occur outside of the Earth and its atmosphere. It studies the origin, physical and chemical properties of the objects that are visible in the sky (and outside the Earth) as well as the processes that result from them. During the twentieth century, astronomy was divided into three branches: Computational Astronomy, Celestial Mechanics, and Astrophysics. The common prominent states of astrophysics are manifested in the naming of academic departments and institutions involved in astronomical research:
The oldest are merely astronomical groups and institutes; the newest tend to keep the term “astronomical physics” in their name; sometimes they do not use the word astronomy to emphasize the nature of their research. In addition, research in astrophysics, especially theoretical astrophysics, can be done by people with a background in physics and mathematics.
Night sky observation
The night sky is one of the natural blessings that God has given to humans so that they can interact with it and utilize it as a guide and astronomical laboratory. The night sky, this forgotten nature, has been considered by humans for more than 4,500 years, and these ancient artifacts have long been explored by humans.
Description of the first light in the universe
The night sky is decorated with thousands of points of light, and trillions of stars are distributed in groups called galaxies around the universe. Stars are the most primitive and common objects in the universe, found in a variety of sizes. They are huge spheres of hydrogen and helium gas – sometimes with slightly heavier elements – formed in large rotating clouds called nebulae.
Learn more about the m106 galaxy
M106 is also known as NGC4258 in the General List of Non-Stellar Objects. This galaxy is not close to us at all. If we could travel at the speed of light, it would take us about 22 million years to reach it. In other words, it is said to be about 22 million light-years away! Although this beautiful galaxy is outside our local galactic group, it is considered one of our cosmic neighbors throughout the vast cosmos.
Although we cannot see it with naked eyes, astronomers by using very large and powerful telescopes are observing this beautiful and astonishing part of the sky to obtain the required information. One such tool is the Nicholas Mayal Telescope in Arizona, USA. Researchers have just released one of the best and most beautiful images of the M106 galaxy in early 2021.
At the heart of the galaxy’s center is a supermassive black hole that is highly gravitating gas and dust. A black hole spinning at an incredible speed, spewing red bursts of gas. Even the Hubble Space Telescope could not accurately observe the center of the galaxy M106.
Standard candles
The M106 is particularly important. This is because of the presence of cephalic variables that can be closely monitored. Cepheids are variable pulsating stars that are used as “cosmic criteria” to measure the size of the universe.
Astronomers call these standard objects “standard candles” because their luminosity is known. So, it is easy to measure the distance of these stars by measuring the light coming from them and comparing them to their actual values. Of course, there are other standard candles in the universe besides Cepheids.
