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Personally I have a hard time trying to accept dark matter and dark energy. The simplest explanation for dark matter is that there is needed a modification of laws of gravity a la Newton. And this will lead to a better understanding of gravity at the quantum level, while for dark energy - forget it as there was a refutation of the whole idea of dark energy (need to find the paper) that easily refuted dark energy on the basis that from first principles their assumptions were wrong. Its initially stated that in space matter is evenly distributed. But clearly its not as seen from galaxy surveys where there are voids and clumps. So from first principles there initial statements are wrong. The paper i remember then calculated red shifts of galaxies through this clumpiness of the Universe and showed the extra redshift was due to the fact that space has extra clumped material that increased the redsift along the line of site to their exploding supernova. But of course this was ignored by main stream scientists that had a vested interest ie grants tied up to dark energy research. In my opimion the universe is simpler than all these bolt on epicycles that modern scientists are doing - its all to clumsy and inelegant.
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