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| The '''Giant Arc''' is a ] discovered in June 2021 that spans 3.3 billion ].<ref name=new_scientist>{{Cite web|url=https://www.newscientist.com/article/2280076-line-of-galaxies-is-so-big-it-breaks-our-understanding-of-the-universe/|title=Line of galaxies is so big it breaks our understanding of the universe|first=Bas den|last=Hond|website=New Scientist}}</ref> The structure of ] exceeds the 1.2 billion light year threshold, challenging the ] that at large enough scales the universe is considered to be the same in every place (]) and in every direction (]). The Giant Arc consists of galaxies, ], as well as gas and ]. It is located 9.2 billion light-years away and stretches across roughly a 15th of the radius of the observable universe.<ref>{{Cite web|url=https://www.livescience.com/giant-arc-in-space.html|title='Giant arc' stretching 3.3 billion light-years across the cosmos shouldn't exist|first=Adam|last= Mann|website=livescience.com|date=11 June 2021}}</ref> It was discovered using data from the ] by the team of ], a doctoral candidate in cosmology at the ].<ref name=new_scientist/> | The '''Giant Arc''' is a ] discovered in June 2021 that spans 3.3 billion ].<ref name=new_scientist>{{Cite web|url=https://www.newscientist.com/article/2280076-line-of-galaxies-is-so-big-it-breaks-our-understanding-of-the-universe/|title=Line of galaxies is so big it breaks our understanding of the universe|first=Bas den|last=Hond|website=New Scientist}}</ref> The structure of ] exceeds the 1.2 billion light year threshold, challenging the ] that at large enough scales the universe is considered to be the same in every place (]) and in every direction (]). The Giant Arc consists of galaxies, ], as well as gas and ]. It is located 9.2 billion light-years away and stretches across roughly a 15th of the radius of the observable universe.<ref>{{Cite web|url=https://www.livescience.com/giant-arc-in-space.html|title='Giant arc' stretching 3.3 billion light-years across the cosmos shouldn't exist|first=Adam|last= Mann|website=livescience.com|date=11 June 2021}}</ref> It was discovered using data from the ] by the team of ], a doctoral candidate in cosmology at the ].<ref name=new_scientist/> <ref name="bbc"> , By Jasmin Fox-Skelly, 3rd March 2023, BBC. </ref> | ||
| If the Giant Arc were visible in the night sky it would form an arc occupying as much space as 20 full moons, or 10 degrees on the sky.<ref>{{Cite web|url=https://www.youtube.com/watch?v=DXtmRRXTiSw|title=New Astronomy: Large-Scale Structure in our Universe by: Alexia M. Lopez|via=www.youtube.com}}</ref> | If the Giant Arc were visible in the night sky it would form an arc occupying as much space as 20 full moons, or 10 degrees on the sky.<ref>{{Cite web|url=https://www.youtube.com/watch?v=DXtmRRXTiSw|title=New Astronomy: Large-Scale Structure in our Universe by: Alexia M. Lopez|via=www.youtube.com}}</ref> | ||
Revision as of 15:01, 8 March 2023
Large scale structure discovered in June 2021.webp){kind=link}
The Giant Arc is a large-scale structure discovered in June 2021 that spans 3.3 billion light years. The structure of galaxies exceeds the 1.2 billion light year threshold, challenging the cosmological principle that at large enough scales the universe is considered to be the same in every place (homogeneous) and in every direction (isotropic). The Giant Arc consists of galaxies, galactic clusters, as well as gas and dust. It is located 9.2 billion light-years away and stretches across roughly a 15th of the radius of the observable universe. It was discovered using data from the Sloan Digital Sky Survey by the team of Alexia M. Lopez, a doctoral candidate in cosmology at the University of Central Lancashire.
If the Giant Arc were visible in the night sky it would form an arc occupying as much space as 20 full moons, or 10 degrees on the sky.
See also
References
- ^ Hond, Bas den. "Line of galaxies is so big it breaks our understanding of the universe". New Scientist.
- Mann, Adam (11 June 2021). "'Giant arc' stretching 3.3 billion light-years across the cosmos shouldn't exist". livescience.com.
- The discovery of giant superclusters of galaxies are challenging our very understanding of the Universe., By Jasmin Fox-Skelly, 3rd March 2023, BBC.
- "New Astronomy: Large-Scale Structure in our Universe by: Alexia M. Lopez" – via www.youtube.com.
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