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Nature
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85%
Material world and its phenomena
Galaxy filament
Y
92%
Largest structures in the universe, made of galaxies
Observable universe
Y
86%
All of space observable from the Earth at the present
region of space
Y?
73%
zone in physical space defined by fixed or transient boundaries
Spacetime
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66%
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Physical system
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59%
Portion of the universe chosen for analysis
Dark matter
?
TBD
Hypothetical invisible cosmic material
