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kuartus4
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If the universe is infinite in size, is possible that it only have a finite amount of mass/energy with the rest of the universe being completely empty?
The size of the observable universe is estimated to be around 93 billion light years in diameter. However, the actual size of the entire universe is still unknown and may be infinite.
The total mass of the universe is estimated to be around 3x10^52 kilograms. This includes all matter, dark matter, and energy.
The size of the universe is measured using various methods, such as redshift of galaxies, cosmic microwave background radiation, and the expansion rate of the universe. These measurements are then used to calculate the size of the observable universe.
Yes, the universe is currently expanding at an accelerating rate. This was first discovered by Edwin Hubble in the 1920s and has been confirmed by numerous observations since then.
Only about 5% of the universe is made up of visible matter, which includes stars, planets, and galaxies. The remaining 95% is made up of dark matter and dark energy, which have yet to be fully understood by scientists.