Dark matter composition research - A useless assumption?

More and more astronomers and astrophysicists think that dark matter does not exist. Rather than to search an explanation of the anomalies by an unobservable unobserved matter, it would more judicious to re-examine the physical laws constituting the standard model, and which are also questioned by even more fundamental problems. It would then be possible to solve several problems at The string theory and axions

Some astrophysicists turn for example to the of the string theory. The string theory adds six new dimensions to the four usual ones (three dimensions of space and one dimension for time) and would place the dark matter in these new dimensions which are inaccessible for us; explaining why it would not be detectable. The electromagnetic and nuclear forces (strong and weak) would be confined in our four dimensions and could not leave them. On the other hand, the gravitation could disperse in other dimensions, and then drop in intensity compared to the other forces.

Another theoretical particle, the axion, which would be extra-light (1 µeV), stable and which wouldn't interact much with matter - a then practically undetectable particle - would make another good candidate for dark matter. This particle would solve problems arising from the antimatter (why matter won over antimatter). Various programs were launched since 1996 to try to detect axions.

Star-gazing isn't all about horoscopes and other fortune hullabaloo. Beyond trying to predict the future and guessing whether you'll be lucky for tomorrow's round of poker games with friends, astronomy is a deep study on cosmic bodies and phenomenon. Take dark matter for instance.

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Introduction First observational evidences The galactic rotation problem
Dark matter within galaxies Dark matter between galaxies Dark matter Composition
Baryonic Nonbaryonic Neutrino WIMP String theory