XPost: sci.physics, sci.astronomy, alt.politics
XPost: talk.politics.misc

On 7/27/2018 4:23 PM, Dr. Jai Maharaj wrote:

How Do We Know Dark Matter Really Exists?

Written by Ashley Hamer
Curiosity, curiosity.com
July 25, 2018

Ever since the late 1960s when Vera Rubin and Kent Ford
discovered that galaxies don't behave the way they should,
scientists have been looking for the mysterious substance
behind that behavior. That theoretical stuff is called dark
matter, and while it's invisible to telescopes, it has
mass, which means it can show its might through the force
of gravity. Of course, that's all theoretical. Some might
even say it's a little too convenient, as if scientists
just came up with a magical substance that makes the math
work. What makes us so sure that dark matter is even a
thing?

Hold Me Closer, Tiny Particle

"People ask this question a lot," said Katie Mack, a
theoretical astrophysicist at North Carolina State
University who studies dark matter. "You know, maybe dark
matter is just a fudge factor or something." But for
astrophysicists, dark matter is much more than that.

If you go back to high school physics class, you may
remember that the more mass something has, the greater its
gravitational pull. If galaxies were only made up of the
stuff we can see, there wouldn't be enough gravity to keep
them together, much less to keep the stars in the sparse
outer edges orbiting just as fast as those in the center.
In fact, scientists reckon that normal matter makes up less
than five percent of the universe. Dark matter seems to
make up a whopping 27 percent. (The rest is a mysterious
force called dark energy.)

Continues at:

https://curiosity.com/topics/how-do-we-know-dark-matter-really-exists-curiosity

Jai Maharaj, Jyotishi
Om Shanti
http://groups.google.com/group/alt.fan.jai-maharaj

<sci-fi warning!>

I wonder if dark matter can possibly be loosely related to the 3d
equipotential gravitational field. It is hard to draw a 3d
equipotential, yet easy in 2d. In the 2d version we just take the
perpendicular field, easy. In 3d, there are infinite choices of what
might be a perpendicular line, harder.

Fwiw, one of my highly crude solutions is to plot three points in a
field line, then take the surface normal of the resulting 3d triangle comprising said points. Then we create the next segment of the field
line using this normal. It can create renderings like:

https://plus.google.com/101799841244447089430/posts/PU1rRsaEUzK

The mysterious lines in purple are the experimental 3d result of my
little hack solution for an equipotential field. The lines in red and
greed are the actual field lines.

The lines in white are the unit cube.

</sci-fi warning!>

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XPost: sci.physics, sci.astronomy, alt.politics
XPost: talk.politics.misc

We DON'T know that "dark matter" exists ... and after
a good decade+ of very expensive looking we STILL can't
find any.

What we DO know is there's some effect in play that
at least LOOKS like what you'd expect from clouds
of invisible matter.

But "looks like" and "is" are different things.

On the other hand, "dark ENERGY" really seems to
exist. Only one source of energy can appear to come
from everywhere all at once - a higher-dimensional
reserve ... bleeding in like sunshine into FlatWorld.
Likely the 'big bang' isn't done banging yet, the
effects are just being spread across a much larger
3-D space now.

So, on the plus side, physics isn't "over" - there
are things we still don't understand. Maybe Einstein
didn't go far enough ? Maybe there's a theory that
will turn relativity into a "special case" just as
relativity did to Newton ? Maybe this is all some
alien video game with a "fudge factor" added so the
sim would keep proceeding as desired ? So many
exciting possibilities :-)

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