Tag: gravity
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Black holes. Magnetism. Fields.
A new study of supermassive black holes at the centers of galaxies has found magnetic fields play an impressive role in the systems' dynamics. In fact, in dozens of black holes surveyed, the magnetic field strength matched the force produced by the black holes' powerful gravitational pull. (1) Magnetic fields seem to be everywhere. It…
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Physics constants not so constant. Unless you assume so...
Australian astronomers have combined all observations of supernovae ever made to determine that the strength of gravity has remained unchanged over the last nine billion years. (1) But is this really the case? How solid is such a conclusion? Digging a little deeper makes things more clear... The original paper can be found here. The…
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Hawking, black holes and how everyone is right!
In 1974, Stephen Hawking found that matter and energy can escape a black hole through what is now known as Hawking radiation. However, he contended that the radiation would be so scrambled that scientists could never work backwards to understand what fell into the black hole in the first place. This violates a basic piece…
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Gravity waves, Universe, Poetry...
According to Einstein, we should expect to find this radiation everywhere in space. Gravity affects the shape of space and time. Paths of light and massive bodies curve under its influence. When something churns space-time with enough energy – say a supernova explosion or two black holes in orbit around each other – the distortion spreads out…
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