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'Cosmic joust': Astronomers observe pair of galaxies in deep-space battle
- Astronomers observed two distant galaxies locked in a collision over 11 billion years ago, seen as the 'cosmic joust'.
- The encounter involves one galaxy's quasar emitting intense radiation that penetrates and disrupts the other galaxy's gas clouds.
- Using ALMA and ESO's Very Large Telescope in Chile, researchers resolved the galaxies' structure, previously seen as a single object.
- The galaxies charged repeatedly at about 500 km/s, and the quasar's radiation damaged star-forming regions, reducing new star formation in the victim galaxy.
- Researchers published these findings in Nature and expect future telescopes like ESO's Extremely Large Telescope to deepen understanding of quasars and galaxy evolution.
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A quantum miracle enabled the formation of neutral atoms
In order for you to exist, a lot of things had to happen beforehand. Planet Earth needed to come into existence, complete with the organic ingredients from which life could arise. In order to have those ingredients, we need for many previous generations of stars to have lived-and-died, recycling the elements formed within them back into the interstellar medium. For those stars to live, large quantities of neutral, molecular gas had to collect in…
Light from the collition of the two galaxies lasted over 11 billion years to reach Earth, so astronomers observed it as it was when the universe had 18% of its estimated age.
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Total News Sources44
Leaning Left3Leaning Right5Center10Last UpdatedBias Distribution56% Center
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C 56%
R 28%
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