9/20/2023 0 Comments No u blackholeNow, let's imagine the same exact puzzle, only this time, let's replace the real, physical planet Earth with a black hole that's exactly the same mass. Christopher Vitale of Networkologies and the Pratt Institute If we were to replace Earth with a denser version, up to and including a singularity, the spacetime deformation shown here would be identical only inside the Earth itself would a difference be notable. In General Relativity, we treat space and time as continuous, but all forms of energy, including but not limited to mass, contribute to spacetime curvature. 'straight' lines to instead become curved by a specific amount. Instead of an empty, blank, three-dimensional grid, putting a mass down causes what would have been. It's a pretty straightforward exercise in both Newton's and Einstein's gravity to show that this is the case, and it agrees thoroughly with what we observe as far as spaceborne objects hitting or missing the Earth. If those objects happen to strike the Earth - hitting the atmosphere, oceans, or surface of our planet - they'll fall into (or onto) our world, but if not, they'll escape from our gravitational pull. Of course, the answer is pretty obviously "no." Earth simply has gravity that attracts things to it, distorting the fabric of space around it and altering the paths of the objects that pass nearby. How would you respond if you were asked the question, "does the Earth suck everything into it?" This might puzzle you, but let's think about it a little more deeply, starting with planet Earth. He's an extremely messy eater who ejects practically every particle of matter that he attempts to devour, very similar to black holes in that regard. that dares to approach his vicinity, a careful observer will note that practically no cookie particles wind up remaining in his mouth. While a casual observer might think that Cookie Monster devours every last crumb of every cookie. If you've had a child (or been one) since the 1970s, you've probably seen it in action for yourself. But the overwhelming majority of the cookie matter that approaches the mouth of Cookie Monster won't wind up getting devoured instead, it gets spit out in all directions, having been accelerated by a variety of chaotic forces. The cookies get funneled inside towards it. Sure, every cookie in the nearby vicinity will find its way into the area near Cookie Monster's mouth. If you've ever seen Cookie Monster get his hands on cookies, you'll know what I'm talking about. Instead, it's far more accurate - and far more fun, as I alluded to in my Brain Bar talk in Hungary - to think of black holes as giant cosmic Cookie Monsters. X-ray: NASA/CXC/UNH/D.Lin et al, Optical: CFHT, Illustration: NASA/CXC/M.WeissÄon't think of a vacuum cleaner when you think of black holes. But there isn't any 'sucking' going on to cause it, simply the disruption of matter and an occasional infall of material. escape,and for cannibalizing its neighbors. A black hole is famous for absorbing matter and having an event horizon from which nothing can.
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