Observable universe
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The observable universe is a ball-shaped region of the universe comprising all matter that can be observed from Earth or its space-based telescopes and exploratory probes at the present time; the ... Wikipedia
Radius: 46.508 billion light years
Average temperature: 2.72548±0.00057 K
Density (of total energy): 9.9×10−27 kg/m3 (equivalent to 6 protons per cubic meter of space)
Mass (ordinary matter): 1.5×1053 kg