- 2060
- Galaxies - the structure of the universe. The universe
forms in filaments and threads like an enormous cosmic web. Today's computers have tried to replicated
the formation of galaxies as interacting particles obeying the laws of physics
and mathematics. The Hubble telescope is
measuring the expansion rate of distant galaxies.
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TO LEARN MORE, CLICK ON ADDRESS
BELOW: FEEDBACK ENCOURAGED
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----------------------------- 2060 -
Galaxies - the structure of the universe
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- The universe
forms in filaments and threads like an enormous cosmic web. Why?
Galaxies form in clusters along this web. Between the clusters of galaxies are giant
voids. Our own Milky Way galaxy is among
100,000 galaxies in the Laniakea Supercluster.
Laniakea means "immeasurable heaven" in the Hawaiian language.
This supercluster spans 500,000 lightyears in length.
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- The Laniakea
Supercluster was discovered in 2014.
These type discoveries started in 1874 when 59 nebulae were found to
have the same orientation with respect to the Milky Way. No one paid attention to this discovery until
1968. Then astronomers realized that
giant elliptical galaxies populated the center of galaxy structures. And, the outer elongated stream of galaxies
are all aligned in the same direction.
Today's astronomy confirms this mirroring behavior and that it has
existed for billions of years.
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- The flattened
shape of galaxies is due to their rotation.
Stars spread into a thin disk as the galaxy rotates. Our Sun travels 500,000 miles per hour in its
rotation and it has completed 24 trips
around the Milky Way since its birth.
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- Today's
computers have tried to replicated the formation of galaxies as interacting
particles obeying the laws of physics and mathematics. It is possible to simulate galactic evolution
in space with unprecedented detail using trillions of particles to represent
stars and dark matter. Astronomers run
the simulation forward in time to get the predicted distribution of
galaxies. Then compare that to
observation. We are trying to learn how
the universe reached its present state.
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- These
simulations show that big galaxies grow by cannibalizing smaller ones. These mergers occur along defined directions
called filaments. Gravity's relentless
tug will slowly align galaxies with their surroundings.
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- Quasars are parallel to each other over distances of
billions of lightyears. Quasars are
galaxies with blackholes at their centers.
They all share the same orientation as the surrounding filament
structure.
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- There is
definitely a truly remarkable coherence to the structure of our universe.
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- The Milky Way
Galaxy is moving much more quickly than any of
the simulations show it should.
The only way to match this behavior is to add a "dipole repeller"
in the area of void space. Expanding
space means the further away a galaxy is the faster it appears to recede from
us.
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- Each
individual galaxy has an expanding space velocity and a "peculiar velocity"
due to the unique gravitational influence in its unique environment. Our Local Group of galaxies, including the Milky Way and the Andromeda, are moving at 631 kilometers per second,
(1,411,507 miles per hour) relative to the "Hubble flow" of many
galaxies. There must be some form of
gravitational repulsion needed to explain this.
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- An under dense
region of neighboring space could effectively act as a gravitational
repeller. Gravity is never repulsive but
a less attraction force in one direction over all other directions behaves
indistinguishably from a repulsion. The
result is that we move through space in our own peculiar fashion.
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- When we have
a sample of one everything is likely to appear the same.
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- The Hubble
telescope is measuring the expansion rate of distant galaxies. The result is that for every 3.3 million
lightyears farther a galaxy is way it is moving 67 kilometers per second faster. (
or, 13 miles per second for every
million lightyears), (or, 49,406 miles per
hour for every million lightyears distance)
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- 95% of the
Universe is shrouded in darkness. Maybe
dark energy is accelerating the galaxies? This means that acceleration is not
constant but it too is accelerating. 95%
of our knowledge is shrouded in darkness too.
We have s lot more to learn.
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- Other reviews
about galaxies:
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- 2046 - How
galaxies form and grow. How blackholes
shape the cosmos.
This review lists 14 other reviews about
galaxies. Including:
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- 1994 - How
many galaxies are there?
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- 13 - How to weigh a galaxy?
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- 892 - How
galaxies grow up?
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- 1121 - Why
do we think there is a blackhole at the center of our galaxy?
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- 1120 - What
happens when galaxies collide?
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Some reviews are at: -------------- http://jdetrick.blogspot.com -----
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------------------------- Saturday, April 14,
2018 --------------------------------
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