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Milky Way warps like a Mexican wave thanks to the Sagittarius Dwarf Galaxy - study | Science | News

| UPDATED: 17:33, Fri, Feb 5, 2021
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The Milky Way galaxy is home to hundreds of billions of stars, including our Sun around which we orbit. Since we cannot see what the galaxy looks like from the outside, most people might imagine the Milky Way resembles a flat disk with two arms coiling around its galactic centre. But new research has found this mental picture is only partially true, as our home galaxy appears to be warped around the edges like the brim of a hat. ....

Xinlun Cheng , Steven Majewski , College Department Of Astronomy , European Space Agency , University Of Virginia , University Of Virginia College , School Of Arts , Milky Way , Graduate School , Privacy Notice , Sagittarius Dwarf Spheroidal , ஸ்டீவன் மஜெவ்ஸ்கி , கல்லூரி துறை ஆஃப் வானியல் , பல்கலைக்கழகம் ஆஃப் வர்ஜீனியா , பல்கலைக்கழகம் ஆஃப் வர்ஜீனியா கல்லூரி , பள்ளி ஆஃப் கலைகள் , பால் வழி , பட்டதாரி பள்ளி , ப்ரைவஸீ அறிவிப்பு ,

A Warp in Milky Way Linked to Galactic Collision

Date Time
A Warp in Milky Way Linked to Galactic Collision
When most of us picture the shape of the Milky Way, the galaxy that contains our own sun and hundreds of billions of other stars, we think of a central mass surrounded by a flat disc of stars that spiral around it. However, astronomers know that rather than being symmetrical, the disc structure is warped, more like the brim of a fedora, and that the warped edges are constantly moving around the outer rim of the galaxy.
“If you have ever seen the audience making a wave in a stadium, it’s very similar to that concept,” said Xinlun Cheng, an astronomy graduate student in the University of Virginia’s College and Graduate School of Arts & Sciences. “Each member of the audience stands up and then sits down at the correct time and in the correct order to create the wave as it goes around the stadium. That’s exactly what stars in our galaxy are doing. Only in this case, as the wave is going around the galax ....

Borja Anguiano , Xinlun Cheng , Steve Majewski , College Department Of Astronomy , School Of Arts Sciences , European Space Agency , University Of Virginia College , University Of Virginia Public , Milky Way , Graduate School , Astrophysical Journal , Sagittarius Dwarf Spheroidal Galaxy , Galactic Warp , Galactic Disk , Virginia Public , ஸ்டீவ் மஜெவ்ஸ்கி , கல்லூரி துறை ஆஃப் வானியல் , பள்ளி ஆஃப் கலைகள் அறிவியல் , பல்கலைக்கழகம் ஆஃப் வர்ஜீனியா கல்லூரி , பல்கலைக்கழகம் ஆஃப் வர்ஜீனியா பொது , பால் வழி , பட்டதாரி பள்ளி , வானியற்பியல் இதழ் , விண்மீன் போரிடு , விண்மீன் வட்டு , வர்ஜீனியா பொது ,