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ALMA discovers the most ancient galaxy

Dragon
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ALMA discovers the most ancient galaxy Empty ALMA discovers the most ancient galaxy

Post by Dragon Sat May 22, 2021 2:41 am

Analyzing data obtained with the Atacama Large Millimeter/submillimeter Array (ALMA), researchers found a galaxy with a spiral morphology by only 1.4 billion years after the Big Bang.

This is the most ancient galaxy of its kind ever observed.

The discovery of a galaxy with a spiral structure at such an early stage is an important clue to solving the classic questions of astronomy: "How and when did spiral galaxies form?"


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Post by Dragon Sat May 22, 2021 2:42 am

ALMA discovers the most ancient galaxy Alma-discovers-the-mos
Credit: ALMA (ESO/NAOJ/NRAO), T. Tsukui & S. Iguchi

ALMA detected emissions from carbon ions in the galaxy. Spiral arms are visible on both sides of the compact, bright area in the center of the galaxy.


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Post by Dragon Sat May 22, 2021 2:44 am



Ancient Galaxy Pileups

The ALMA and APEX telescopes have peered deep into space — back to the time when the Universe was one tenth of its current age — and witnessed the beginnings of gargantuan cosmic pileups: the impending collisions of young, starburst galaxies.

Astronomers thought that these events occurred around three billion years after the Big Bang, so they were surprised when the new observations revealed them happening when the Universe was only half that age!

These ancient systems of galaxies are thought to be building the most massive structures in the known Universe: galaxy clusters.


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ALMA discovers the most ancient galaxy Empty Re: ALMA discovers the most ancient galaxy

Post by Dragon Sat May 22, 2021 4:17 am



Spiral Structure Spotted by ALMA.

New observations reveal the secrets of a dying star


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