How many superclusters of galaxies exist? Zach from Reading

1/24/2018

There are about 10 million superclusters of galaxies according to
www.atlasoftheuniverse.com/universe.html.
However, this is just in what we call the ‘observable universe’. It’s entirely possible however that the whole universe is much bigger than the 'observable universe' which means there could be many many more.
We live inside the Milky Way galaxy, which lives in a Local Group of galaxies, inside the Virgo Cluster, which is inside the Laniakea Supercluster.

A supercluster covers a mind-bogglingly enormous area of space. A beam of light starting at one side of a supercluster would take about 500 million years to reach the other side. And this is a beam of light, the fastest thing that science knows about!

If you were walking, it would take you 112,500,000,000,000,000 years to get to the other side. And that’s with no toilet breaks.

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