Finally, if you are measuring your free fall, it's a one-way trip. Perhaps we have been in a free fall for 13.7 +/- billion years (as measured by our clocks), and destined to continue free falling forever. If you are very close to the event horizon, then the temperature of your background radiation would be very close to absolute zero - for example 2.725 K and slowly falling. The temperature at the event horizon as stated earlier is at absolute zero. Hence the light from "distant" objects will be appear to redshift. (It's the one constant you can trust.) The wavelength of light emitted by "distant" objects will appear to grow larger as your measuring stick shrinks. Your local measurement of the speed of light is still a smidgen under 300,000 km/s. (And of course the initial part of this fall would appear to happen very rapidly.) (for ~ 160 9's) % of the speed of light, when you divide the "M" in M*C^2 by sqrt(1 - V^2/C^2) this produces a new mass that is approximately equal to the visible mass of the known universe. If you assume an initial mass of one hydrogen atom and fall until you reach 99.999. as calculated by an outside observer (who thinks that the rules of a 3-D world still apply) your "energy" speed should be very close to the speed of light. (And give the illusion that not only are they are moving away from you, but that this motion is accelerating. (Just ask the people who design clocks for our GPS satellites.) If your measuring stick is in the process of becoming infinitely small, then your immediate surroundings will appear to becoming very large - billions of light years large. One of the consequences of being in a very strong gravitational field is that your measuring stick becomes very small (as measured by an "outside" observer). If time stops, motion can not exist at the event horizon and the temperature is at absolute zero.Ĭould the earth and everything that can be seen by the Hubble and Webb telescopes be extremely close to the event horizon of a black hole? Quite possibly. Or, we'd see the subtle distortions caused by extreme gravity - like slowing time and stretching matter - as people moved within the black hole.Ĭould the earth be inside a black hole? No. There would be observable signatures of the black hole's spinning. If that were the case, scientists would have noticed, Field told Live Science. Earth is not just tucked into a planet-size black hole or even one the size of the solar system. "If we are in a black hole it must be extremely big," said Scott Field, an associate professor of mathematics at the University of Massachusetts Dartmouth. However, this theory is unlikely to be proven nothing can travel back across a black hole's event horizon.īut if Earth is within a black hole, experts have some estimation of the space chasm's size. In theory, this scenario would mean that universes can exist within universes, like Russian nesting dolls, and that traveling back through a black hole - a likely impossible feat, since light can't even make the reverse journey - would unlock unknown realms, Khanna said. This theory, known as Schwarzschild cosmology, suggests that our universe now expands within a black hole that is part of a parent universe. The dense center compressed and compressed, "until somehow it blows up and a baby universe is formed within the black hole," Khanna said. One theory posits that the Big Bang was first the singularity of a black hole in a larger parent universe. While a black hole collapses in on a tiny, highly dense point, the Big Bang exploded out of such a point. "A black hole looks very much like the Big Bang in reverse. Talking about the latest discovery, lead author Dr James Nightingale, of the Department of Physics at Durham University, said: "This particular black hole, which is roughly 30 billion times the mass of our Sun, is one of the biggest ever detected and on the upper limit of how large we believe black holes can theoretically become, so it is an extremely exciting discovery.But there's another way Earth might have ended up in the belly of a black hole: It could have formed there. This comes days after an international team of experts found that a supermassive black hole at the centre of a galaxy named PBC J2333.9-2343 has changed direction and is now aiming towards the Earth.Īstronomers believe that such massive black holes can be found at the centre of all large galaxies such as the Milky Way, which includes our own solar system. The news about its discovery has been published in the journal Monthly Notices of the Royal Astronomical Society, and has been dubbed "extremely exciting", according to the outlet. Metro quoted the scientists from Durham University as saying that this is one of the biggest ever black hole found. Space scientists in the UK have discovered a supermassive black hole 33 billion times the mass of Sun.
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