What is universe? Explain in detail.
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The Universe is all of space and time and their contents, including planets, stars, galaxies, and all other forms of matter and energy. ... At smaller scales, galaxies are distributed in clusters and superclusters which form immense filaments and voids in space, creating a vast foam-like structure.
Diameter: Unknown. Diameter of the observable universe: 8.8×1026 m (28.5 Gpc or ...
Main contents: Ordinary (baryonic) matter (4.9%); Dark matter (26.8%); Dark energy ...
Mass (ordinary matter): At least 1053kg
Diameter: Unknown. Diameter of the observable universe: 8.8×1026 m (28.5 Gpc or ...
Main contents: Ordinary (baryonic) matter (4.9%); Dark matter (26.8%); Dark energy ...
Mass (ordinary matter): At least 1053kg
ernestinahernandez:
all existing matter and space considered as a whole; the cosmos. The universe is believed to be at least 10 billion light years in diameter and contains a vast number of galaxies; it has been expanding since its creation in the Big Bang about 13 billion years ago.
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The Universe is all of space and time[a] and their contents,[10] including planets, stars, galaxies, and all other forms of matter and energy. While the spatial size of the entire Universe is still unknown,[3] it is possible to measure the observable universe.
Universe
Age (within Lambda-CDM model)
13.799 ± 0.021 billion years[2]
Diameter
Unknown.[3] Diameter of the observable universe: 8.8×1026 m(28.5 Gpc or 93 Gly)[4]
Mass (ordinary matter)
At least 1053 kg[5]
Average density (including the contribution from energy)
9.9 x 10−30 g/cm3[6]
Average temperature
2.72548 K[7]
Main contents
Ordinary (baryonic)matter(4.9%)
Dark matter (26.8%)
Dark energy (68.3%)[8]
Shape
Flat with only a 0.4% margin of error[9]
Universe
Age (within Lambda-CDM model)
13.799 ± 0.021 billion years[2]
Diameter
Unknown.[3] Diameter of the observable universe: 8.8×1026 m(28.5 Gpc or 93 Gly)[4]
Mass (ordinary matter)
At least 1053 kg[5]
Average density (including the contribution from energy)
9.9 x 10−30 g/cm3[6]
Average temperature
2.72548 K[7]
Main contents
Ordinary (baryonic)matter(4.9%)
Dark matter (26.8%)
Dark energy (68.3%)[8]
Shape
Flat with only a 0.4% margin of error[9]
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