Which of the following cosmic structures is the largest?

Galaxy
Galaxy filament
Galaxy cluster
Supercluster
Galaxy filaments are the largest known structures in the universe. They group galaxy superclusters, which in turn are formed by cluster composed of galaxies. Hercules–Corona Borealis Great Wall is considered the largest known structure of Universe. It is estimated to span 10 billions light years.
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Answers by country

Galaxy
Galaxy filament
Galaxy cluster
Supercluster
answers
flagAustria
8%
66%
8%
16%
12
flagPakistan
0%
41%
25%
33%
12
flagthe Philippines
30%
40%
0%
30%
10
flagthe United States
9%
30%
12%
46%
62
flagPoland
27%
25%
3%
43%
4181
flagIndia
9%
16%
13%
59%
122
flagthe United Kingdom
13%
16%
19%
50%
36
flagGermany
33%
15%
13%
37%
53
flagGreece
21%
14%
28%
35%
14
flagAustralia
16%
0%
25%
58%
12