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Astronomers have found the Milky Way’s first known ‘feather’ 5nvklj





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Astronomers have found the Milky Way’s first known ‘feather’

Dragon
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Post by Dragon Sat Nov 27, 2021 9:35 pm

A long, thin filament of cold, dense gas extends jauntily from the galactic center, connecting two of the galaxy’s spiral arms, astronomers report November 11 in the Astrophysical Journal Letters.

This is the first time that such a structure, which looks like the barb of a feather fanning off the central quill, has been spotted in the Milky Way.


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Astronomers have found the Milky Way’s first known ‘feather’ 334pu7m
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Post by Dragon Sat Nov 27, 2021 9:37 pm

Astronomers have found the Milky Way’s first known ‘feather’ 111721_lg_milkywayfeather_feat
JPL-CALTECH/NASA

The Milky Way’s spiral arms, shown in this artist’s illustration, may have feathery bridges of gas connecting them, a new study suggests.

The structure stretches 6,000 to 13,000 light-years from the Norma arm of the Milky Way to a minor arm near the galactic center called the 3-kiloparsec arm.

So far, all other known gas tendrils in the Milky Way align with the spiral arms.


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Astronomers have found the Milky Way’s first known ‘feather’ 334pu7m
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Post by Dragon Sat Nov 27, 2021 9:39 pm



Astronomers have found the Milky Way’s first known ‘feather’

The team that discovered our galaxy’s feather named it the Gangotri wave, after the glacier that is the source of India’s longest river, the Ganges.

In Hindi and other Indian languages, the Milky Way is called Akasha Ganga, “the river Ganga in the sky,” says astrophysicist Veena V.S. of the University of Cologne in Germany.


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Astronomers have found the Milky Way’s first known ‘feather’ 334pu7m

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