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The Laniakea Supercluster (Our Home)

Posted April 28, 2015 10:24 AM by Bayes

A Pale Yellow Dot...

The Milky Way, our galaxy, is a small part of a much larger structure called the Laniakea Supercluster. Laniakea is a relatively new concept, defined in 2014 in a paper published by astronomers from the University of Lyon. The structure of the supercluster is determined by the relative peculiar velocities of galaxies.

Laniakea subsumes the prior defined local supercluster, the Virgo Supercluster, which is now a section of the branch we are on. In the image to the right, the red dot represents the location of our galaxy. If you travel up the branch we are on, that first bright section you hit is the Virgo Supercluster. Laniakea consists of 100,000 galaxies over half a billion light-years. It contains four major subsections, the Virgo Supercluster, the Hydra-Centaurus Supercluster, the Pavo-Indus Supercluster, and the Southern Supercluster.

The Great Attractor, a gravitational anomaly located near the Hydra-Centaurus Supercluster pulls all galaxies and galaxy clusters in our area toward it. It now is known to be the center of mass of the Laniakea Supercluster.

If you get a chance, please watch this great video created by Nature on the Laniakea Supercluster:

Nature Video on Laniakea

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#1

Re: The Laniakea Supercluster (Our Home)

04/28/2015 3:25 PM

Very cool. It reminds me of the neurons and synapses of the human brain. It also makes me feel very very small.

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#2
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Re: The Laniakea Supercluster (Our Home)

04/28/2015 11:21 PM

Very Cool in fact.. I passed it around a bit more....................

a joe in texas

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#3

Re: The Laniakea Supercluster (Our Home)

04/28/2015 11:52 PM

Where did the name "Laniakea" came into this? I was born and raised in Hawaii, and have friends that live at Laniakea, and surfed it extensively in the 60's and 70's…Mac

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#5
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Re: The Laniakea Supercluster (Our Home)

04/29/2015 8:04 AM

Hi C-Mac,

The name is Hawaiian for "immeasurable heaven" or less grandly "wide sky". Here is the Wiki explanation of why it got that name. In my blog above I didn't mention an astronomer from the University of Hawaii who was involved in this work (I didn't know), but it seems one was prominently involved. So that should help explain why it got a Hawaiian name.

-R

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Re: The Laniakea Supercluster (Our Home)

04/29/2015 11:02 AM

Thank you, Sir!!

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#4

Re: The Laniakea Supercluster (Our Home)

04/29/2015 4:29 AM

You are adding "Lustre" to our "Cluster"!!

Thanks

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#6

Re: The Laniakea Supercluster (Our Home)

04/29/2015 10:23 AM

And imagine that this all came to be after hundreds of billions of years of random activity by chance. Oh yeh, that's believable!

All we can see and what we haven't yet developed the ability to see is because of a Designer. There was a Creator, if not, what is here is here by design or there would be chaos and destruction. A few degrees closer to the sun and we would burn up, a few degrees farther away and we would freeze. The Universe stays in place because that is how it was designed. It is magnificent and incomprehendable!

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#8

Re: The Laniakea Supercluster (Our Home)

04/29/2015 6:44 PM

If that tiny dot is our galaxy, it shows how incredibly immense the universe is. If its size isn't infinite, it's close enough for practical purposes.

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