Size Matters !

Photo of the Center of the Virgo Cluster of Ga...

Photo of the Center of the Virgo Cluster of Galaxies with names and magnitudes. Photo taken by Bernd Gährken at 14. March 1999 from 1:25 to 1:40 CET on Kodak Pro Gold 400. telescope: 900/150mm 1:5 Newton (Photo credit: Wikipedia)

Artist's conception of the Milky Way galaxy as...

Artist’s conception of the Milky Way galaxy as seen from far Galactic North (in Coma Berenices) by NASA/JPL-Caltech/R. Hurt annotated with arms (colour-coded according to Milky Way article) as well as distances from the Solar System and galactic longitude with corresponding constellation. (Photo credit: Wikipedia)

Size Matters !

The information presented in this blog post is, mostly, from the Atlas of the Universe website. Interpretations of that information are my own.

The radius of the bubble containing the known (visible) universe is about 14 billion light years, give or take an inch or two.

This damp dirt ball we call home is a minor planet orbiting a rather ordinary star in the Orion Spur of the Perseus arm out in the boondocks of the Milky Way Galaxy, which is a member of the Virgo Cluster of Galaxies, which is one of billions of galactic clusters wandering about within the knows universe.

Who needs mythical biblical miracles for numinous and inspiration when Astronomical Science has shown us just how magnificent our universe is ??

The first thing I view when I wake up my computer in the morning is the Astronomy Picture of the Day ( APOD ). I find this to be a good way to start my day.

Numbers used to describe astronomical size and distance are best estimates, rounded to the nearest whole number.

From the Atlas of the Universe website – –

Within the known (visible) universe there are:
[] 10 Million Super Clusters of Groups of Galaxies
[] 25 Billion Galaxy Groups
[] 350 Billion Large Galaxies
[] 7 Trillion Dwarf Galaxies
[] 30 Billion Trillion Stars [That would be 30 times 10 raised to the 22nd Power; or 30 followed by more zeros that you would want to count. ]

I am not aware of an estimate of the total number of planets in the universe, but based upon current knowledge of exoplanets, it would be a very large number, indeed.

Of course, only one of those numberless planets is known to support living creatures, but it is reasonable to think that many of them would support life, and that some would have intelligent life.

All of which makes one a bit humble, doesn’t it?

About w6bky

Retired 29 May 1987. Now do hobbies: blogging, ham radio, gardening, etc.
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3 Responses to Size Matters !

  1. awesome post.well written


  2. Mike says:

    Yes, even though I am nothing to this universe, I am part of it, and THAT makes me proud, whereas a religion…. let us not talk about nonsense 🙂

    Nice post, thank you


    • w6bky says:


      Thanks for visiting and leaving a comment.

      I think we (YOU and I) are a bit more than “nothing”, and we are certainly a part of the universe.

      Yes, talking about religion, especially trying to have a conversation with religious folk, is pretty much a waste of time.


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