
Galactic Halo Images: वैज्ञानिकों ने पहली बार किसी आकाशगंगा के आभामंडल का फोटो लिया है. नेचर एस्ट्रोनॉमी में छपी एक रिसर्च में उसका एनालिसिस किया गया है.
Galactic Halo Images: Scientists have taken a photo of the halo of a galaxy for the first time. It has been analyzed in a research published in Nature Astronomy.
Science News: Galaxies are much bigger than we thought till now. This has been revealed from the photographs of the gas cloud present around a galaxy. For the first time, scientists have taken a photo of this cloud called ‘Galactic Halo’ and analyzed it. It shows that the Milky Way is already in contact with our nearest neighboring galaxy, Andromeda.
The results of the researchers’ analysis have been published in the journal Nature Astronomy. They have analyzed the halo of a starburst galaxy named IRAS 08339+6517. Starburst galaxies are those galaxies where stars are formed at a very rapid rate. IRAS 08339+6517 is at a distance of about 80.2 megaparsecs or about 260 million light years from us.
The curtain started rising from decades old mystery When viewed through a conventional telescope, the ends of galaxies are clearly visible, where the light from the stars within them stops coming. But stars constitute only one-third of the normal matter present in a galaxy (except dark matter). About 70% of the normal matter in galaxies resides around the stellar disk.
About 70% of the normal matter in galaxies is found in the cloud of gas around the stellar disk called the circumgalactic medium (CGM). This gas halo has been a mystery in astronomy for decades
Until now, astronomers could only study this cloud of gas by measuring light passing through an object behind the galaxy. Light absorbed by a gas can be used to analyze its composition. But now deep imaging has revealed the halo of gas around IRAS 08339+6517. This was done for the first time for any galaxy.
The galaxy’s stellar disk extends just 7,800 light years from its center. The new photos show that the gas around it extends at least 100,000 light-years away into deep space – as far as the edge of the region that astronomers have been able to see.
Researchers detected a clear boundary between the CGM and the interstellar medium. This is the space that exists between star systems in a galaxy.
What is the Milky Way?
The Milky Way is a huge collection of stars, dust and gas. It’s called a spiral galaxy because if you could view it from the top or bottom, it would look like a spinning pinwheel. The Sun is located on one of the spiral arms, about 25,000 light-years away from the center of the galaxy.
Why it is called a Milky Way?
They come in a variety of shapes and sizes. The Milky Way is a large barred spiral galaxy. All the stars we see in the night sky are in our own Milky Way Galaxy. Our galaxy is called the Milky Way because it appears as a milky band of light in the sky when you see it in a really dark area.
Can we see Milky Way?
On a clear night, void of light pollution, we can catch a glimpse of the bright lights of the galactic city streaking across the night sky. Our window into the universe, this milky white band of stars, dust and gas is where our galaxy gets its name
Why is Milky Way called Akash Ganga?
Milky Way galaxy is often known as Akash Ganga in Hindi. This is because at the clear night, the entire galaxy looks like a white and wide river especially like River Ganga. This river shaped being in the sky is named as Akash which means sky. This is why it is called as Akash Ganga
Which God created the Milky Way?
One legend explains how the Milky Way was created by Heracles when he was a baby. His father, Zeus, was fond of his son, who was born of the mortal woman Alcmene. He decided to let the infant Heracles suckle on his divine wife Hera’s milk when she was asleep, an act which would endow the baby with godlike qualities.
Who discovered the Milky Way?
Galileo Galilei
Proof of the Milky Way consisting of many stars came in 1610 when Galileo Galileiused a telescope to study the Milky Way and discovered that it is composed of a huge number of faint stars. Galileo also concluded that the appearance of the Milky Way was due to refraction of the Earth’s atmosphere.
What is our universe called?
Our universe is also called the cosmos. It is originally a greek word. In early days it was thought that our Galaxy constituted the entire universe.
Why is the Andromeda Galaxy so famous?
It is the nearest spiral galaxy to our own and has become the most studied “external” galaxy so far. On 19 August 1885, the only recorded supernova in the Andromeda Galaxy took place when a star, now known as S Andromedae, destroyed itself in a convulsive explosion.
Is Andromeda bigger than Milky Way?
Andromeda is larger than the Milky Way in terms of the distance it extends. However, the two galaxies are roughly comparable in mass, and it’s hard to say which one is more massive
What happens if two galaxies collide?
Therefore, as two galaxies collide, their gravitational fields will whip around each other’s astronomical objects, thereby deforming the shapes of the galaxies and changing the relative locations of the stars and other bodies within them
Could Andromeda have life?
Since liquid water is a key condition for life as we know it here on Earth, it is an important part of the search for life beyond our planet. For all we know, galaxies like the Andromeda Galaxy could be teeming with habitable worlds, some of which may even host intelligent life.28
Will humans survive an Andromeda collision?
It seems Earth, the sun and planets in our solar system will survive the crash but take on new coordinates in the cosmos. The video and computer simulation detail the structural evolution of the Milky Way and Andromeda leading up to the birth of a new galaxy.
Are we touching Andromeda?
Researchers are suggesting that the outer boundary of our home Milky Way galaxy may stretch much farther into the vastness of space than initially thought — and is in fact already touching its closest neighbor, the galaxy Andromeda
Why did Milky Way and Andromeda collide?
Just as Earth’s gravity might pull on a nearby asteroid, sending it on a collision course with our planet, the Andromeda and Milky Way galaxies interact with each other gravitationally. This has resulted in the two galaxies falling toward each other at a rate of about 37 miles per second (60 km per second)
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