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Applications and Investigations in Earth Science (9th Edition)
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Author:Edward J. Tarbuck, Frederick K. Lutgens, Dennis G. Tasa
Publisher:Edward J. Tarbuck, Frederick K. Lutgens, Dennis G. Tasa
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Read the article and summarize the article in AT LEAST 1O SENTENCES! DO NOT INCLUDE DIALOGUES!!
11:34 O
Br ull 52%
The Milky Way has a "feather" in its cap.
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.
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.
She and colleagues found the Gangotri wave by
looking for clouds of cold carbon monoxide
gas, which is dense and easy to trace, in data
from the APEX telescope in San Pedro de
Atacama, Chile. 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 (SN: 12/30/15).
The Gangotri wave has another unusual
feature: waviness. The filament appears to
wobble up and down like a sine wave over the
course of thousands of light-years.
Astronomers aren't sure what could cause that,
II
Transcribed Image Text:11:34 O Br ull 52% The Milky Way has a "feather" in its cap. 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. 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. She and colleagues found the Gangotri wave by looking for clouds of cold carbon monoxide gas, which is dense and easy to trace, in data from the APEX telescope in San Pedro de Atacama, Chile. 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 (SN: 12/30/15). The Gangotri wave has another unusual feature: waviness. The filament appears to wobble up and down like a sine wave over the course of thousands of light-years. Astronomers aren't sure what could cause that, II
11:35 O
Br wll 52%
sciencenews.org/article/astr
:D
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.
She and colleagues found the Gangotri wave by
looking for clouds of cold carbon monoxide
gas, which is dense and easy to trace, in data
from the APEX telescope in San Pedro de
Atacama, Chile. 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 (SN: 12/30/15).
The Gangotri wave has another unusual
feature: waviness. The filament appears to
wobble up and down like a sine wave over the
course of thousands of light-years.
Astronomers aren't sure what could cause that,
Veena says.
Other galaxies have gaseous plumage, but
when it comes to the Milky Way, "it's very, very
difficult" to map the galaxy's structure from the
inside out, she says. She hopes to find more
galactic feathers and other bits of our galaxy's
structure. "One by one, we'll be able to map the
Milky Way."
II
Transcribed Image Text:11:35 O Br wll 52% sciencenews.org/article/astr :D 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. She and colleagues found the Gangotri wave by looking for clouds of cold carbon monoxide gas, which is dense and easy to trace, in data from the APEX telescope in San Pedro de Atacama, Chile. 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 (SN: 12/30/15). The Gangotri wave has another unusual feature: waviness. The filament appears to wobble up and down like a sine wave over the course of thousands of light-years. Astronomers aren't sure what could cause that, Veena says. Other galaxies have gaseous plumage, but when it comes to the Milky Way, "it's very, very difficult" to map the galaxy's structure from the inside out, she says. She hopes to find more galactic feathers and other bits of our galaxy's structure. "One by one, we'll be able to map the Milky Way." II
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