Gravity
Gravity is a strange thing.
Take Quasars or quasi stellar objects for instance. These are essentially supermassive black holes in the center of face-on galaxies where one of the two polar jets point toward us earthlings. The jets are super bright ; Travels literally across the visible universe ; Are thousands of galaxies bright.
Now it is said that no amount of nuclear power can generate that brightness at those distances. The only thing that can do that is - gravity.
And I was thinking. Gravity - it can be gentle. Actually one of the weakest fundamental forces. But at scale, it is something else. Like a drop of water versus an ocean.
Lisa Randall once gave an analogy about gravity’s relative weakness. She picked up a paper clip with a small magnet and said that the electromagnetic forces could lift it up despite the entire earth pulling against it. Which tells you how weak gravity is relative to the others.
In fact they say gravity could be a "projection" from another dimension. It is so weak that it could be it is “leaking” from another realm into ours. So we only see a component. It has a deep connect with space though. According to Einstein, gravity is the curvature of spacetime. As mass tells space how to bend and space tells mass how to move.
The edge of black holes, is where gravity makes love to space.
Outside, from the last orbit of infalling matter, some of it is shred into its elements creating focussed energy jets that shine across the universe. A bit like the plume of vapor rising high above Niagara falls as water drops jostle with each other in a race to fall.
Inside event horizons, as they call the edge of no return, spacetime falls into forever, taking matter with it - to unknown realms.
Take Quasars or quasi stellar objects for instance. These are essentially supermassive black holes in the center of face-on galaxies where one of the two polar jets point toward us earthlings. The jets are super bright ; Travels literally across the visible universe ; Are thousands of galaxies bright.
Now it is said that no amount of nuclear power can generate that brightness at those distances. The only thing that can do that is - gravity.
And I was thinking. Gravity - it can be gentle. Actually one of the weakest fundamental forces. But at scale, it is something else. Like a drop of water versus an ocean.
Lisa Randall once gave an analogy about gravity’s relative weakness. She picked up a paper clip with a small magnet and said that the electromagnetic forces could lift it up despite the entire earth pulling against it. Which tells you how weak gravity is relative to the others.
In fact they say gravity could be a "projection" from another dimension. It is so weak that it could be it is “leaking” from another realm into ours. So we only see a component. It has a deep connect with space though. According to Einstein, gravity is the curvature of spacetime. As mass tells space how to bend and space tells mass how to move.
The edge of black holes, is where gravity makes love to space.
Outside, from the last orbit of infalling matter, some of it is shred into its elements creating focussed energy jets that shine across the universe. A bit like the plume of vapor rising high above Niagara falls as water drops jostle with each other in a race to fall.
Inside event horizons, as they call the edge of no return, spacetime falls into forever, taking matter with it - to unknown realms.
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