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Above: Map of the Huge-LQG noted by black circles, adjacent to the Clowes–Campusano LQG in red crosses. Map is by Roger Clowes of University of Central Lancashire. Bottom: Image of the bright quasar 3C 273. Each black circle and red cross on the upper image map is a quasar similar to this one.
The Huge Large Quasar Group, (Huge-LQG, also called U1.27) is a possible structure or pseudo-structure of 73 quasars, referred to as a large quasar group, that measures about 4 billion light-years across. At its discovery, it was identified as the largest and the most massive known structure in the observable universe,[1][2][3] though it has been superseded by the Hercules–Corona Borealis Great Wall at 10 billion light-years.[4] There are also issues about its structure (see Dispute section below).
- ^ Aron, Jacob. "Largest structure challenges Einstein's smooth cosmos". New Scientist. Retrieved 14 January 2013.
- ^ "Astronomers discover the largest structure in the universe". Royal astronomical society. Archived from the original on 2013-01-14. Retrieved 2013-01-13.
- ^ Clowes, Roger G.; Harris, Kathryn A.; Raghunathan, Srinivasan; Campusano, Luis E.; Söchting, Ilona K.; Graham, Matthew J. (2013-01-11). "A structure in the early Universe at z ~ 1.3 that exceeds the homogeneity scale of the R-W concordance cosmology". Monthly Notices of the Royal Astronomical Society. 1211 (4): 6256. arXiv:1211.6256. Bibcode:2013MNRAS.429.2910C. doi:10.1093/mnras/sts497. S2CID 486490.
- ^ SciShow Space (21 July 2016). "The Impossibly Huge Quasar Group". YouTube.