I know that the universe is 13 billion years old and the fastest anything could be is the speed of light so if the universe is expanding as fast as it could be wouldn’t the universe be 13 billion light years big? But I’ve searched and it’s 93 billion light years big, so is the universe expanding faster than the speed of light?
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no. Hubble’s law.
expansion of the universe is happening on a cosmic scale, affecting the vast distances between galaxies. the rate of expansion is typically measured in units of kilometers per second per megaparsec (km/s/Mpc). This unit describes how fast objects are receding from each other over a given distance.
the accepted value for the Hubble constant is approximately 73.3 kilometers per second per megaparsec, which means that for every 3.26 million light-years of distance between objects, they are moving apart by about 73.3 kilometers per second. as described by Hubble’s law, is not constrained by the speed of light. The expansion rate is determined by the overall structure and content of the universe, including dark matter, dark energy, and ordinary matter.
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