Posted on 11/29/2018 11:07:34 AM PST by ETL
Gravity is big and weird and difficult to study. It moves through space as a wave, sort of like how light does. But these waves are subtle and difficult to detect. They occur in measurable amounts only after massive events, like the collision of black holes. Humanity didn't spot its first gravitational wave until 2015. Then, in 2017, astronomers for the first time detected both gravitational waves and light from a single event: a neutron star collision.
Now, researchers are using data from that event to confirm some basic facts about the universe.
In a paper first uploaded Nov. 1 to the preprint server arXiv (which Live Science first saw reported on ScienceAlert), researchers announced that they found no evidence of "gravitational leakage." Scientists had thought it was possible for gravity to penetrate high dimensions (those beyond the four that humans experience — up/down, side to side, forward/backward, time) even though light does not. If that happened, the force of gravity would lose more of its energy than light does while passing through space. But comparing the light and gravitational waves from that neutron star collision showed that this wasn't happening.
All our dimension's gravity appears to be staying right where it belongs, as Albert Einstein predicted in his theory of general relativity. ..."
Overall, researchers found, Einstein's theories of gravity remain basically intact. Someday, that might change. But it hasn't yet, even after two neutron stars slammed into each other.
(Excerpt) Read more at livescience.com ...
There’s nothing like the universe to bring you down to earth.
Many a time as a teenager I felt like that.
its amazing how well Einstein’s work has held up so long, with all of the new discoveries about the universe...
I’d expect his equations will someday need modification, if only because he had no way of knowing all of the astrological and scientific discoveries that have been made in the last 100 years
but...well, so far he’s got a great batting average!
It does hurt to look at, doesn’t it, at least for a guy.
It has held up, even if it has some unseen flaws, because the so-called scientists of today are of a much lower level of intelligence than those of the past. If a computer does not see it, there are no scientists capable of a truly original thought.
It isn’t just testosterone levels that have nosedived since the early 60’s...
Click It!
Gravity is big and weird and difficult to study. It moves through space as a wave, sort of like how light does...and it always finds it’s way to my bathroom scale.
From a casual reading the lack of leakage is a serious blow to some of the wackier but popular ideas in physics, for example, brane theory.
Whew! what a relief! I feel better now.
It doesn’t hurt that anyone who seriously questions the theory gets drummed out of the profession.
Well this post seems to have taken an interesting turn :o)
It doesn’t hurt that anyone who seriously questions the theory gets drummed out of the profession
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^^^. This ^^^
Re Foto at Post #3:
Great balls of fire!
I know. And I've never understood how you can gain 2 pounds from a 6 oz. candy bar!
actually, that’s not really correct.
there are thousands of scientists and mathematicians trying to disprove, modify, or adapt Einstein’s theory to what has since been discovered about how the universe works (such as the various versions of quantum theory, etc.)
Indeed, Einstein himself perceived that his theory might be improvable, especially when quantum physics arose ...and he spent the rest of his life trying to improve his theory. There would’ve been nothing more pleasing to Einstein than to find a way to adapt his theory with quantum theory, or even to find a third way to make the two approaches compatible.
Today, Einstein’s theory works remarkably well, every time its tested... on visible or macro-scale phenomena. And, it makes intuitive sense.
At the same time, quantum theory works remarkably well on extremely small, microscopic/sub-atomic scales. It doesn’t make full intuitive sense, but as strange as it may seem.. it also pans out,... so far anyway, in its arena of the tiny...
perhaps the easiest way to access some of this information is to do a quick search for “Grand Unified Theory” or “Theory of Everything” ...or “quantum gravity” (which is what physicists have begun to call the missing link ....)
Best,
Gravitational efficiency???
Some people here seem to treat all sciences as though they were "Gore-Bull Warming" nonsense.
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