Tuesday, March 15, 2011

is the universe rotating ?


All celestial objects have rotation/spin.
 Spin seems to be  an intrinsic aspect of the universe.
Therefore it seems plausible that  the universe itself is also rotating around a central axis?
What information would be required to calculate how long it takes the universe to complete one revolution?

How long does it take our sun to complete one orbit around the center of our galaxy?
And what is it's travel velocity?

  Sun orbits the center of our galaxy at the speed of approx 150 miles
per second in a counter-clockwise direction.
 And of course we are moving right along with it,(the earth travels around the sun at 66,000 mph)
It takes the Sun (and us) about 200 - 250 million years to orbit once
 around the center of the Milky Way Galaxy.
  So yes, the Sun does have a "year" as well - about 200 million times
or so as long as an Earth year.
http://www.enchantedlearning.com/subjects/astronomy/solarsystem/where.shtml
  The sun rotates on its axis; a point on its equator makes one rotation
in about 25 Earth days,(while near the poles it requires about 31 Earth
days). 
So a point on the sun's equator travels at about 4500 miles/hr.
(By contrast, a point on the Earth's equator travels at about
1000 miles/hour).
   Additionally, the sun (and the solar system) is revolving about the
center of the Milky Way at about 150 miles per *second*
(that is over a half-million miles/hour!)

In approximately  7.6 billion years the sun will engulf and vapourize the earth!
Upon exhausting it's fuel, the sun will expand into a Red Giant whose outer boundaries will exceed earth's orbital diameter.
 No life on earth will survive such a Supernova event!


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Is there a massive Black Hole at the center of the universe?

According to Newton's third law...
For every action there is an equal and opposite re-action.
This means that for every force there is a reaction force that is equal in size, but opposite in direction

Supernova explosions are models of the Big Bang, but on a human time scale.
When a star explodes, part of it expands and dissipates outward, but another part collapses inward upon itself  leaving a superdense remnant at it's center.
That is ,the outward explosive force is balanced by an equal and opposite inwardly acting centripetal(implosive) force.
If the Big Bang was a scaled up version of a supernova event, 
Newton's Third law requires the existence of a very large Black Hole at the central core  of the universe --the content of wch would more than account for "black matter/energy"

If we measure the outward rate of expansion of a nebula,we can calculate backward to the time of the supernova explosion. That is, each nebula has a unique and calculable birthdate!

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Is the universe expanding?

If space (the universe)  is expanding....it is not just the space between galaxies wch expands, but the space within galaxies also! *
Indeed if space expands, then the space within objects must also expand.
Therefore the diameter of the sun and the earth increases. Atoms expand. The meter stick expands.
The expansion of space requires the lenghtening of even the wavelenght of light.
But for a photon to go from a short wavelenght to a longer wavelenght entails a loss of energy.
What happens to the lost energy, and how is it shed and dissipated?

* Because the gravitational force of attraction between two masses is inversely related to the distance between them, and because the distances between objects within a galaxy are small compared to intergalactic distances...it is possible that the force of gravity has a net contracting effect within galactic dimensions wch counterbalances the force of expansion wch is observed to be in effect between galaxies.
That is ,the contracting effect upon space within the comparatively shorter intragalactic distances... more than nullifies the "expansion of space" observed between galaxies.

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If equal  amounts of matter and antimatter were created at the instant of the Big Bang, where is the antimatter hiding??

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What powered the Big Bang ?
How was the explosion wch gave rise to the universe set into motion?
What was before the Big Bang?

First there was nothing, and that nothing exploded into everything that exists.
How could everything come from nothing?
How could energy spontaneously come into existence out of nothingness?
If energy cannot be created or destroyed, how did it come into existence in the first place?

According to the Big Bang theory ,the universe exploded out of a single point of origin.
If that is true, then that "point of origin" is the center of the universe!

12 comments:

  1. The rabbit in the hat
    knows a lot about dat!

    ReplyDelete
  2. If time (and space) began with the Big Bang ,then there was no time before this event.
    Therefore it makes no sense to ask what was before the Big Bang,nor what caused the Big Bang.
    There simply was no Before!
    If nothing existed before the Big Bang, no cause existed for the Big Bang!
    Just as space and time (and energy)
    came into existence at the instant of the Big Bang,space and time cease to exist in the reciprocal phenomenon of the Black Hole.

    ReplyDelete
    Replies
    1. Are you sure that time is only as old as the universe--13.7 billion years?

      Delete
  3. An ocurrence without a cause---is this not the definition of a miracle!
    Both creation stories are equally fantastical!
    It seems equally incomprehensible to think that the universe arose spontaneously,or by chance, or without a cause (how incredible it is to believe that the universe created itself spontaneouly out of nothing) ,as it is to think that it was created by a GodCreator!

    ReplyDelete
    Replies
    1. A Universe from Nothing: Why There is Something Rather than NothingLawrence Krauss ...
      another book that examines "how can something come from nothing?"

      Delete
  4. The "expansion of space" suggests the existence of an
    anti-gravity force that is pulling everything apart.
    The observation that this expansion rate is increasing
    indicates that the force pushing things apart is stronger thsn
    the inward-acting force holding things together.
    If the universe is spinning, perhaps the observed "expansion"
    can be explained as due to a centrifugal force (in the same way
    that a spinning skater with arms outstretched feels their arms being pulled outward).
    Since there is a precise mathematical relationship between the
    outward-acting centrifugal force and the spin velocity, ...
    knowing the rate/velocity of expansion of the universe should enable a calculation of the rotational velo city of the universe

    ReplyDelete
  5. See also: Conversion of spin to linear velocity

    What is the rotational velocity of a neutron?
    Does a photon have spin(rotational motion)?

    We think of light as always being in motion--moving with a linear velocity of 300,000 km/s.
    But if we visualize it as a spherical particle with some finite volume and circumference,
    all it's linear velocity could be mathematically converted into an equivalent rotational velocity. It's energy content would be conserved and light would then be in a state of rest (zero linear velocity) with respect to linear motion.
    This may be the mechanism whereby the kinetic energy of a photon is converted into the stored energy of a particle possessing mass.

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  6. What are the spin rates of Black Holes?

    The Schwarzchild radius is the distance from the centre of the black hole to where the velocity required to escape its gravitational pull exceeds the speed of light.

    For distant observers like us, the coordinate speed of light at a black hole event horizon is said to be zero. Gravitational time dilation is said to be infinite there. So surely a spinning black hole must have a spin rate of... zero. 



    John Duffield
    Sep 28, 2012 12:46 AM
    United Kingdom

    ReplyDelete
  7. if the universe itself is rotating...is it possible to measure the speed of this rotation?
    Does this mean that space-time is rotating.... and how is space-time rotation related to the expansion of the universe?

    two vectors/directions of motion: How do you overlay the rotational motion over the motion of outward expansion?

    ReplyDelete

  8. rotational speed of tbe universe

    It takes 250 million years to make one full rotation of the Milky Way.
    Presumably the rotational speed of all galaxies is similar in magnitude.

    Presumably the rotational speed of tbe universe is much slower...and it would take trillions? of years to complete one rotation.

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  9. This comment has been removed by the author.

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  10. Why the Big Bang could not have occured...

    ReplyDelete