Περί σκοτεινής ύλης (dark matter)

Η θεωρία της ύπαρξης ύλης, the dark matter / η σκοτεινή ύλη, η οποία αποτελεί τη πλειοψηφία το σύμπαντος αλλά δεν μπορεί να ανιχνευθεί με τα υπάρχοντα τηλεσκόπια ή άλλους σύγχρονους τρόπους παρατήρησης αρχίζει να αποκτά επικριτές. Μήπως τελικά δεν υπάρχει σκοτεινή ύλη κι απλώς η πιθανολογούμενη ύπαρξη της "βόλεψε" κάποιους επιστήμονες και τις κοσμολογικές τους θεωρίες; Μήπως χρήζει, απλώς, βελτίωσης η συγκεκριμένη θεωρία; Κάτι τέτοιο υποστηρίζει ο καθηγητής αστροφυσικής στο πανεπιστήμιο της Βόννης στη Γερμανία, Pavel Kroupa:

"According to mainstream researchers, the vast majority of the matter in the Universe is invisible: it consists of dark-matter particles that do not interact with radiation and cannot be seen through any telescope. The case for dark matter is regarded as so overwhelming that its existence is often reported as fact. Lately, though, cracks of doubt have started to appear. In July, the LUX experiment in South Dakota came up empty in its search for dark particles – the latest failure in a planet-wide, decades-long effort to find them. Some cosmic surveys also suggest that dark particles cannot be there, which is especially confounding since astronomical observations were the original impetus for the dark-matter hypothesis.
The issues at stake are huge. Acceptance of dark matter has influenced scientific thinking about the birth of the Universe, the evolution of galaxies and black holes, and the fundamental laws of physics. Yet even within academic circles, there is a lot of confusion about dark matter, with evidence and interpretation often conflated in misleading and unproductive ways." [...]

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