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Thursday, August 6, 2015

HOW LARGE IS OUR UNIVERSE?

The Big Bang occurred around 13.8 billion years ago.  Thus, our Universe must be a sphere with a radius of 13.8 (the graphic to the right says 13.7, but that was drawn in 2012) light years.  Wrong!

Okay, then, what about the skin of a sphere, where the radius is 13.8 light years.  Why would any matter be left behind if everything zooming out of the Big Bang spot shot out into a vacuum?  Again, wrong!


Astrophysicists tell us that the shape of our Universe can be:
  • a sphere, but because it is expanding, the radius is 46 billion light years;
  • saddle shape and infinite in size; or
  • flat and infinite in size.
How can serious experts get a flat shape?  If something explodes, the particles go in all three dimensions.  I've asked top scientists a dozen times, please explain to me why the Universe is not a simple sphere. I haven't yet understood the rationale, although it has something to do with mass and space curvature.

Oh well, here is a Hubble Telescope shot of 10,000 galaxies:


Some are stars, but all the fuzzy ones are galaxies.  Hypothetically, pick any one, go to one end of it, shine a light to the other end, and it will take something like 100,000 years for this beam to reach the other edge.  Our Universe is very large.

Our Milky Way is of average size and age, with at least 100 billion, and, maybe 400 billion stars.  


You want to quickly learn galactical details?  Click here.

There are, perhaps, 6 trillion galaxies if our Universe is spherical. Some are so large that it would take 1.5 million years for light to cross.  Sum them all up, and there could be 35 septillion (10 to the 24th power) stars out there.  But only if the Universe is spherical.

What are the odds that life has only occurred on Planet Earth?  Of course, if our Universe is flat or saddle-shape, then there must be other life because the number of stars is infinite.  What about parallel universes?  Next, the Search for Extraterrestrial Intelligence, or maybe just a comparison of Planet Earth with Jupiter.

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Tropical Storm Guillermo at 50 MPH is moving west just north of the Hawaiian Islands:


However, right behind is a tropical depression which will strengthen into a hurricane, follow almost exactly the same path as Guillermo, and probably also weaken into a tropical storm before getting to Hawaii:


The real monster is Typhoon Soudelar, said to be the strongest ocean storm this year, now only at 105 MPH, but all indications show some strengthening into a Category 4, then a path right through the middle of Taiwan, and in a weakened state on to China.  Fortunately enough, although Soudelar will be the most powerful typhoon to strike the country in three years, much of the population areas are in the north and south of the island, so the devastation should be limited.



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