I am still convinced that what we know about the universe is only a drop in a bucket compared to oceans of what we don't know and can't see.

I think Newton had the same opinion.
Tullio

+10

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I am still convinced that what we know about the universe is only a drop in a bucket compared to oceans of what we don't know and can't see.

I think Newton had the same opinion.
Tullio

+ I lost count

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rOZZ
Music
Pictures

Didn't know where to put this, but the Milky Way is appropriate.

What a beautiful image

The little sad thing here is that when compared with numbers, of which I now have quite much stored, as well as a couple of blown discs and partitions that have to be fixed before later, my knowledge about the great scales of the Universe is really limited to the Local Group, the Virgo Cluster of Galaxies, the Coma Cluster of Galaxies and finally the Hercules Galaxy Cluster.

However, before the Hercules Cluster of Galaxies there is one notable cluster to be mentioned. Perhaps several clusters, all within roughly the same area of the sky are found in the constellation Corona Borealis.

If that is not enough, you also may be able to locate some of the Abell galaxy clusters having that designation using for example http://www.sky-map.org .

So, if these galaxy clusters are just that, what then constitutes a supercluster of galaxies, or rather what is the definition of a supercluster - and where in the heavens are these objects being found?

Most of us certainly have heard about the "Great Attractor". For now it does not appear to be related to any known celestial source, neither visual nor radio based.

You may also know that some superclusters goes by someone's name, not necessarily the constellation which they are located in.

Galaxies and galaxy clusters as well as superclusters of galaxies are part of the Universe we are living in. No-one ever has ever imagined whether even superclusters are part of an even larger picture of the Universe for which we do not have any knowledge about yet.

Again, it would have been so nice to have a summary, or description of our current knowledge about the structures of the known Universe, but for now there appears to be no comprehensive guide to such material.

If you are able to give me a clue, or perhaps provide some more information, you are welcome.

No nonsense stuff, please.

Thanks!

Edit: Found the video, of course.

Astronomers find 'new' dwarf galaxy in Milky Way's neighborhood

Hey, neighbor! Astronomers searching the sky with NASA’s Hubble Space Telescope have discovered an odd little dwarf galaxy in our very own backyard -- a mere 7 million light years away.


The findings, described in the Monthly Notices of the Royal Astronomical Society, add a new member to the more than 50 galaxies in our Local Group (part of the Laniakea supercluster), which includes Andromeda and our own Milky Way.

http://www.latimes.com/science/sciencenow/la-sci-sn-hubble-dwarf-galaxy-spheroidal-missing-gas-andromeda-milky-way-20141226-story.html

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Not Laniakea.

The corrugated galaxy: Milky Way may be much larger than previously estimated



The Milky Way galaxy is at least 50 percent larger than is commonly estimated, according to new findings that reveal that the galactic disk is contoured into several concentric ripples. Credit: Rensselaer Polytechnic Institute

The Milky Way galaxy is at least 50 percent larger than is commonly estimated, according to new findings that reveal that the galactic disk is contoured into several concentric ripples. The research, conducted by an international team led by Rensselaer Polytechnic Institute Professor Heidi Jo Newberg, revisits astronomical data from the Sloan Digital Sky Survey which, in 2002, established the presence of a bulging ring of stars beyond the known plane of the Milky Way.

http://phys.org/news/2015-03-corrugated-galaxy-milky-larger-previously.html

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