Universe
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The universe is all of space and time and their contents. It comprises all of existence, any fundamental interaction, physical process and physical constant, and therefore all forms of energy and matter, and the structures they form, from... Wikipedia
Age (within ΛCDM model): 13.787 ± 0.020 billion years
Average density (with energy): 9.9×10−27 kg/m3
Average temperature: 2.72548 K (−270.4 °C, −454.8 °F)
Diameter: Unknown. Observable universe: 8.8×1026 m (28.5 Gpc or 93 Gly)
Mass (ordinary matter): At least 1053 kg
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