Artist’s impression of the warped and twisted Milky Way disk.Chen Xiaodian

How do you measure something you are inside of? We’ve all seen countless images of our own Milky Way, but have you ever considered this: none of them are real. All are artists’ impressions of what astronomers think the Milky Way is probably like.

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We now know that the Milky Way is not flat. Astronomers from the National Astronomical Observatories of the Chinese Academy of Sciences (NAOC) and Macquarie University in Sydney, Australia have just published a paper in Nature Astronomy that reveals the Milky Way to be ‘warped, twisted and flared’ far away from the Milky Way’s center.

“We usually think of spiral galaxies as being quite flat, like Andromeda which you can easily see through a telescope,” says Professor Richard de Grijs, a co-author and astronomer from Macquarie University.

The Andromeda Galaxy, or M31.Getty

How does the Milky Way work?

When viewed from a great distance, the Milky Way galaxy would look like a thin disk of stars that orbit once every few hundred million years around its central region. The estimated 300 billion stars, together with a mass of dark matter, provide the gravitational ‘glue’ to hold it all together, say the astronomers.

What causes the S-shaped warp?

What is warped are hydrogen clouds in the outer galaxy. It’s the change in the pull of gravity far from the galaxy’s inner region that causes the Milky Way’s S-shaped warp. “It is notoriously difficult to determine distances from the Sun to parts of the Milky Way’s outer gas disk without having a clear idea of what that disk actually looks like,” said Dr. Chen Xiaodian, a researcher at NAOC and lead author of the article. “However, we recently published a new catalog of well-behaved variable stars known as classical Cepheids, for which distances as accurate as 3 to 5% can be determined.”

RS Puppis is one of the brightest known Cepheid variable stars in the Milky Way galaxy.Hubble Space Telescope

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What is a Cepheid star?

Yellow bright giant and supergiant stars. Cepheid stars are often referred to as ‘cosmic yardsticks’ or ‘standard candles‘, and much of what astronomers know about distances in the Universe is down to observations of these young pulsating stars. In the study, 1,339 Cepheids were studied, each up to 100,000 brighter than the Sun.

Why are Cepheid stars important?

Cepheids pulse predictably, so changes in their luminosity can be used to obtain a highly reliable distance. The team used ‘classic’ Cepheids, which pulse over days or months. Cepheids were first discovered in 1912 by Henrietta Swan Leavitt at Harvard College Observatory after studying thousands of variable stars in the Magellanic Clouds, two dwarf galaxies that orbit the Milky Way. Her work was then used by Edwin Hubble to determine that some nebula that could be seen from Earth were, in fact, themselves distant galaxies. That data was then used to calculate that the more distant the galaxy, the faster it is moving away from us: the Hubble Constant, which describes the expanding Universe.

For the astronomers in China and Australia, data on these classic Cepheid stars was provided by the Wide-field Infrared Survey Explorer (WISE), allowing the team to develop the first accurate 3D-dimensional picture of our Milky Way out to its far outer regions.

NASA’s Wide-field Infrared Survey Explorer, or WISE, launching in2009 WISE scans the entire sky in infrared light, picking up the glow of hundreds of millions of objects and producing millions of images.NASA

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Why does this matter?

“Somewhat to our surprise, we found that in 3D our collection of 1,339 Cepheid stars and the Milky Way’s gas disk follow each other closely. This offers new insights into the formation of our home galaxy,” said de Grijs. “Perhaps more importantly, in the Milky Way’s outer regions, we found that the S-like stellar disk is warped in a progressively twisted spiral pattern.”

“This new morphology provides a crucial updated map for studies of our galaxy’s stellar motions and the origins of the Milky Way’s disk,” said Dr. Deng Licai, senior researcher at NAOC and co-author of the paper.

What causes the warp?

For the past 50 years, there have been indications that the hydrogen clouds in the Milky Way are warped. Astronomers have observed a dozen other galaxies which showed similar progressively twisted spiral patterns in their outer regions. “Combining our results with those other observations, we concluded that the Milky Way’s warped spiral pattern is most likely caused by ‘torques’, or rotational forcing, by the massive inner disk,” said Dr. Liu Chao, senior researcher and co-author of the paper.

Wishing you clear skies and wide eyes

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(******** )Artist’s impression of the deformed and twisted Galaxy disk.

(*********
) Chen Xiaodian

How do you determine something you are within? We have actually all seen many pictures of our own Galaxy, however have you ever considered this: none are genuine. All are artists’ impressions of what astronomers believe the Galaxy is most likely like.

POST CONTINUES AFTER AD

We now understand that the Galaxy is not flat. Astronomers from the National Astronomical Observatories of the Chinese Academy of Sciences (NAOC) and Macquarie University in Sydney, Australia have simply released a paper in Nature Astronomy that exposes the Galaxy to be ‘deformed, twisted and flared’ far from the Galaxy’s center.

” We normally think about spiral nebula as being rather flat, like Andromeda which you can quickly translucent a telescope,” states Teacher Richard de Grijs, a co-author and astronomer from Macquarie University.

The Andromeda Galaxy, or M31

(*********
) Getty

How does the Galaxy work? (*********************** )(*********** )

When seen from a country mile, the Galaxy galaxy would appear like a thin disk of stars that orbit when every couple of hundred million years around its main area. The approximated300 billion stars, together with a mass of dark matter, supply the gravitational ‘glue’ to hold everything together, state the astronomers.

What triggers the S-shaped warp?(*********************** )

(************ )What is deformed are hydrogen clouds in the external galaxy. It’s the modification in the pull of gravity far from the galaxy’s inner area that triggers the Galaxy’s S-shaped warp.” It is infamously challenging to figure out ranges from the Sun to parts of the Galaxy’s external gas disk without having a clear concept of what that disk in fact appears like,” stated Dr. Chen Xiaodian, a scientist at NAOC and lead author of the post. “Nevertheless, we just recently released a brand-new brochure of well-behaved variable stars referred to as classical Cepheids, for which ranges as precise as 3 to 5% can be figured out.”

RS Puppis is among the brightest recognized Cepheid variable stars in the Galaxy galaxy. Hubble Area Telescope

POST CONTINUES AFTER AD

What is a Cepheid star?

Yellow brilliant giant and supergiant stars. Cepheid stars are frequently described as ‘cosmic yardsticks’ or ‘ basic candle lights‘, and much of what astronomers understand about ranges in deep space is down to observations of these young pulsating stars. In the research study, 1,339 Cepheids were studied, each as much as 100,000 brighter than the Sun.

Why are Cepheid stars essential?

Cepheids pulse naturally, so modifications in their luminosity can be utilized to acquire a extremely reputable range The group utilized ‘timeless’ Cepheids, which pulse over days or months. Cepheids were very first found in 1912 by Henrietta Swan Leavitt at Harvard College Observatory after studying countless variable stars in the Magellanic Clouds, 2 dwarf galaxies that orbit the Galaxy. Her work was then utilized by Edwin Hubble to figure out that some nebula that might be seen from Earth were, in truth, themselves remote galaxies. That information was then utilized to compute that the more remote the galaxy, the quicker it is moving far from us: the Hubble Consistent, which explains the broadening Universe

For the astronomers in China and Australia, information on these timeless Cepheid stars was supplied by the Wide-field Infrared Study Explorer (WISE), permitting the group to establish the very first precise 3D-dimensional image of our Galaxy out to its far external areas.

NASA’s Wide-field Infrared Study Explorer, or WISE, introducing in2009 SENSIBLE scans the whole sky in infrared light, getting the radiance of numerous countless items and producing countless images. NASA

POST CONTINUES AFTER AD

Why does this matter?

” Rather to our surprise, we discovered that in 3D our collection of 1,339 Cepheid stars and the Galaxy’s gas disk follow each other carefully. This provides brand-new insights into the development of our house galaxy,” stated de Grijs. “Maybe more significantly, in the Galaxy’s external areas, we discovered that the S-like excellent disk is deformed in a gradually twisted spiral pattern.”

” This brand-new morphology supplies a vital upgraded map for research studies of our galaxy’s excellent movements and the origins of the Galaxy’s disk,” stated Dr. Deng Licai, senior scientist at NAOC and co-author of the paper.

What triggers the warp?

For the past 50 years, there have actually been indicators that the hydrogen clouds in the Galaxy are deformed. Astronomers have actually observed a lots other galaxies which revealed comparable gradually twisted spiral patterns in their external areas. “Integrating our outcomes with those other observations, we concluded that the Galaxy’s deformed spiral pattern is more than likely brought on by ‘torques’, or rotational requiring, by the huge inner disk,” stated Dr. Liu Chao, senior scientist and co-author of the paper.

Wanting you clear skies and broad eyes

POST CONTINUES AFTER AD

If you enjoyed this post, you may likewise like these:

Texas Claims The 3rd Dark Sky Sanctuary In The U.S. As Resist Light Contamination Continues

Galaxy Will Slam Into Galaxy, Awaken Great Void And Could Send Out Planetary System ‘Flying Into Area’

Mystical ‘Missing Out On Link’ Things Found At Edge Of Planetary System By Researchers Utilizing Tiny Telescopes

When is The Next ‘Super Blood Wolf Moon’? How To See Another Lunar Eclipse Prior To You Pass Away

” readability =”112
65953453453″ >

.

Artist’s impression of the deformed and twisted Galaxy disk. Chen Xiaodian

.

.

How do you determine something you are within? We have actually all seen many pictures of our own Galaxy, however have you ever considered this: none are genuine. All are artists’ impressions of what astronomers believe the Galaxy is most likely like.

. POST CONTINUES AFTER AD

.

We now understand that the Galaxy is not flat. Astronomers from the National Astronomical Observatories of the Chinese Academy of Sciences (NAOC) and Macquarie University in Sydney, Australia have simply released a paper in Nature Astronomy that exposes the Galaxy to be ‘deformed, twisted and flared’ far from the Galaxy’s center.

“We normally think about spiral nebula as being rather flat, like Andromeda which you can quickly translucent a telescope,” states Teacher Richard de Grijs, a co-author and astronomer from Macquarie University.

.

.

The Andromeda Galaxy, or M31 Getty

.

.

How does the Galaxy work?

When seen from a country mile, the Galaxy galaxy would appear like a thin disk of stars that orbit when every couple of hundred million years around its main area. The approximated 300 billion stars, together with a mass of dark matter, supply the gravitational ‘glue’ to hold everything together, state the astronomers.

What triggers the S-shaped warp?

What is deformed are hydrogen clouds in the external galaxy. It’s the modification in the pull of gravity far from the galaxy’s inner area that triggers the Galaxy’s S-shaped warp. “It is infamously challenging to figure out ranges from the Sun to parts of the Galaxy’s external gas disk without having a clear concept of what that disk in fact appears like,” stated Dr. Chen Xiaodian, a scientist at NAOC and lead author of the post. “Nevertheless, we just recently released a brand-new brochure of well-behaved variable stars referred to as classical Cepheids, for which ranges as precise as 3 to 5 % can be figured out.”

.

.

RS Puppis is among the brightest recognized Cepheid variable stars in the Galaxy galaxy. Hubble Area Telescope

.

.

POST CONTINUES AFTER AD

.

What is a Cepheid star?

Yellow brilliant giant and supergiant stars. Cepheid stars are frequently described as ‘cosmic yardsticks’ or’ basic candle lights ‘, and much of what astronomers understand about ranges in deep space is down to observations of these young pulsating stars. In the research study, 1, 339 Cepheids were studied, each as much as 100, 000 brighter than the Sun.

Why are Cepheid stars essential ?

Cepheids pulse naturally, so modifications in their luminosity can be utilized to acquire a extremely reputable range The group utilized ‘timeless’ Cepheids, which pulse over days or months. Cepheids were very first found in 1912 by Henrietta Swan Leavitt at Harvard College Observatory after studying countless variable stars in the Magellanic Clouds, 2 dwarf galaxies that orbit the Galaxy. Her work was then utilized by Edwin Hubble to figure out that some nebula that might be seen from Earth were, in truth, themselves remote galaxies. That information was then utilized to compute that the more remote the galaxy, the quicker it is moving far from us: the Hubble Consistent, which explains the broadening Universe

.

For the astronomers in China and Australia, information on these timeless Cepheid stars was supplied by the Wide-field Infrared Study Explorer (WISE) , permitting the group to establish the very first precise 3D-dimensional image of our Galaxy out to its far external areas.

.

.

NASA’s Wide-field Infrared Study Explorer, or WISE, introducing in2009 SENSIBLE scans the whole sky in infrared light, getting the radiance of numerous countless items and producing countless images. NASA

.

.

POST CONTINUES AFTER AD

.

Why does this matter?

“Rather to our surprise, we discovered that in 3D our collection of 1, 339 Cepheid stars and the Galaxy’s gas disk follow each other carefully. This provides brand-new insights into the development of our house galaxy,” stated de Grijs. “Maybe more significantly, in the Galaxy’s external areas, we discovered that the S-like excellent disk is deformed in a gradually twisted spiral pattern.”

“This brand-new morphology supplies a vital upgraded map for research studies of our galaxy’s excellent movements and the origins of the Galaxy’s disk,” stated Dr. Deng Licai, senior scientist at NAOC and co-author of the paper.

What triggers the warp ?

For the past 50 years, there have actually been indicators that the hydrogen clouds in the Galaxy are deformed. Astronomers have actually observed a lots other galaxies which revealed comparable gradually twisted spiral patterns in their external areas. “Integrating our outcomes with those other observations, we concluded that the Galaxy’s deformed spiral pattern is more than likely brought on by ‘torques’, or rotational requiring, by the huge inner disk,” stated Dr. Liu Chao, senior scientist and co-author of the paper.

Wanting you clear skies and broad eyes

. POST CONTINUES AFTER AD

.

If you enjoyed this post, you may likewise like these:

Texas Claims The 3rd Dark Sky Sanctuary In The U.S. As Resist Light Contamination Continues

Galaxy Will Slam Into Galaxy, Awaken Great Void And Might Send Out Planetary System ‘Flying Into Area’

Mystical ‘Missing Out On Link’ Things Found At Edge Of Planetary System By Researchers Utilizing Tiny Telescopes

When is The Next ‘Super Blood Wolf Moon’? How To See Another Lunar Eclipse Prior To You Pass Away

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