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Hace 4 días · Galaxies are made from enormous amounts of visible stars, gas and dust, as well as — the theory goes — a huge halo of invisible dark matter. This means that light will be bent and distorted as ...
Hace 12 horas · Cosmology does not need dark matter or dark energy in an expanding universe that allows the constants of nature to evolve, and light loses energy as it travels vast distances.
Hace 5 días · Particle physics theory suggests two likely dark matter candidates: new particles with interactions so weak we haven't observed them yet, and, very light wave-like particles termed axions.
Hace 4 días · Astronomy. Photons are odd little beasts. They can act like waves. They can act like particles. They are teeny tiny messengers of force. They are carriers of energy. But most of all, they’re ...
Hace 2 días · In astronomy, dark matter is a hypothetical form of matter that appears not to interact with light or the electromagnetic field. Dark matter is implied by gravitational effects which cannot be explained by general relativity unless more matter is present than can be seen.
Hace 2 días · Dark matter, dark energy, particles that move with lightning speed – these are the central focus of recent cosmic mysteries. Imagine we’ve been sharing our universe with particles that travel faster than light, known as tachyons. This is the audacious new theory presented by scientists Samuel H. Kramer from the University of Wisconsin ...
Hace 5 días · Einstein and his colleagues argued that quantum mechanics could not be a complete theory if it relied on probabilistic outcomes and non-local correlations. They proposed that there must be hidden variables determining the outcomes of quantum measurements. Decades later, John Bell’s theorem provided a way to test the EPR paradox experimentally.
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