Technology: New 3D map of the Milky Way shows we live in a warped galaxy - PressFrom - US
  •   
  •   
  •   

TechnologyNew 3D map of the Milky Way shows we live in a warped galaxy

10:30  06 february  2019
10:30  06 february  2019 Source:   nbcnews.com

Cosmic collision billions of years off could fling Earth out of Milky Way

Cosmic collision billions of years off could fling Earth out of Milky Way Day to day here on Earth, our biggest threat from space is probably some undetected asteroid smashing into us, but astrophysicists looking at the universe on a much larger scale warn that another kind of collision could also impact our planet in the distant future. require(["medianetNativeAdOnArticle"], function (medianetNativeAdOnArticle) { medianetNativeAdOnArticle.

Previously thought to be flat, the Milky Way has an S-like warped appearance according to astronomers in China and Australia. 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

The Milky Way 's disk of stars is ' warped ' and twisted, according to scientists who have built the first accurate 3 D map of Earth's home galaxy . Combining their new results with those other observations, the researchers concluded that the Milky Way 's warped spiral pattern is most likely

Seems we weren't quite right about the Milky Way.

Last year we learned that our home galaxy is bigger than we imagined, and now comes word that its shape isn't quite what many have believed it to be. Instead of being a mostly flat spiral disk of stars and gas, new research by astronomers in China and Australia shows that the Milky Way is significantly warped at its edges.

The Milky Way could hit another galaxy in 2 billion years, sending our solar system flying into space

The Milky Way could hit another galaxy in 2 billion years, sending our solar system flying into space Our Milky Way galaxy could collide with a nearby galaxy (the Large Magellanic Cloud) in a "spectacular" cosmic collision in about 2 billion years.

An artistic rendering shows the warped and twisted Milky Way disk. Photo by CHEN Xiaodian. Feb. The new stellar distance database allowed scientists to build a detailed 3 D map of the Milky Way 's Cepheids are big and bright young stars. They live fast and die young. Classical Cepheids are 20

A new study has shown that in reality the Milky Way is warped and twisted. Such high stellar masses imply that they live fast and die young, burning through their nuclear fuel The map sheds fresh light on the evolution of the galaxy - and also shows the warped disc also contains young stars.

"We usually think of spiral galaxies as being quite flat, like Andromeda, which you can easily see through a telescope," Richard de Grijs, an astronomer at Macquarie University in Sydney, Australia, and a co-author of the paper describing the research, said in a statement. The paper was published Feb. 5 in the journal Nature Astronomy.

We've all seen photos of distant galaxies. But there's no way to take such a photo of the Milky Way because our solar system and all the space probes we've ever launched lie within it — along a finger of stars known as the Orion Spur.

But the astronomers were able to create what's being called the first accurate three-dimensional map of our galaxy with help from newly published data for a type of star known as classical Cepheids. These huge, bright stars — up to 20 times bigger and 100,000 times brighter than the sun — produce pulsating light. They brighten at times, dim at others — all according to a precise and well-known schedule.

Hubble just spotted a never-before-seen galaxy hiding in plain sight

Hubble just spotted a never-before-seen galaxy hiding in plain sight There's no shortage of interesting things to see in our own galaxy, but astronomers love finding new galactic neighbors as well. Observing other galaxies can teach scientists a lot about how the massive structures form, live, and die. Using images from the Hubble Space Telescope, researchers studying distant, dim stars accidentally stumbled upon something they hadn’t anticipated: An entirely undocumented galaxy sitting around 30 million light-years from Earth. News of the discovery was published in Monthly Notices of the Royal Astronomical Society.

"This offers new insights into the formation of our home galaxy . 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." The researchers attribute this pattern to the gravitational influence of the galactic center.

The Milky Way ’s disk of stars is ‘ warped ’ and twisted, according to scientists who have built the first accurate 3 D map of Earth’s home galaxy . Researchers from the Macquarie University in Australia and the Chinese Academy of Sciences have found for the first time that our solar system is anything but

By looking at the observed brightnesses and pulsation periods of 1,339 of the Cepheids, the astronomers were able to use them as a sort of cosmic yardstick to pinpoint the stars' locations — and thus determine the overall shape of the galaxy.

"What this paper does is to trace the warp of the stars in the disk better than has been done in the past," Heidi Jo Newberg, an astrophysicist at Rensselaer Polytechnic Institute in Troy, New York, told NBC News MACH in an email.

New 3D map of the Milky Way shows we live in a warped galaxy© CHEN Xiaodian Image: Artist's impression of the warped and twisted Milky Way disk.

The researchers concluded that the warping is likely caused by "torques" generated by the rotation of the vast inner disk of the Milky Way, which is a so-called barred spiral galaxy containing an estimated 100 billion stars.

But Newberg isn't so sure.

"I wonder whether there might be another explanation," she said in the email. "More recent work has shown that warps can be caused by dwarf galaxies that are orbiting, or falling into the Milky Way. Or possibly both mechanisms are at work."

A ‘Gargantuan Bubble’ of New Stars in Nearby Galaxy

A ‘Gargantuan Bubble’ of New Stars in Nearby Galaxy ESO image shows the nebula N180 B, a well-known source of new stars.

A new 3 D map of the Milky Way galaxy shows a different structure than scientists expected. It turns out the outer disk is all warped out of shape. Instead, it’s bent and warped out of shape, according to a new 3 D map of the galaxy described in research published Monday in the journal Nature Astronomy.

New 3 D map reveals The Milky Way is being warped and twisted by its stars. Our home galaxy , the Milky Way , makes for a pretty space picture, and it looks normal at a distance. But it does help them make more sense of our galaxy .Because we live in this galaxy , that makes it harder to observe, and

New 3D map of the Milky Way shows we live in a warped galaxy© NASA/Adler/U. Chicago/Wesleyan/JPL-Caltech Image:

FOLLOW NBC NEWS MACH ON TWITTER, FACEBOOK, AND INSTAGRAM.

Just guess how much the Milky Way weighs.
Judging the size of something is often best done when comparing it to other things, but that line of thinking tends to break down when you start talking about objects in space. Earth is huge, but not when you compare it to something like Jupiter, and Jupiter is tiny compare to our Sun, and our Sun is tiny when compared to… well you get the idea. require(["medianetNativeAdOnArticle"], function (medianetNativeAdOnArticle) { medianetNativeAdOnArticle.

—   Share news in the SOC. Networks

Topical videos:

usr: 13
This is interesting!