Astronomers from the American Case Western Reserve University indicate that the process known as modified Newtonian dynamics (MOND) may be responsible for the formation of the first galaxies. This is a kind of alternative to the assumption that dark matter took a large part in the creation of the universe.
They base their observations on observations from the Webb Telescope. They noticed that some of the oldest galaxies shine brighter and are much larger than the assumptions of general hypotheses about their formation allow. According to the standard model of the formation of the cosmos, the evolution of galaxies would be driven by cold dark matter, which would create their various shapes and sizes. However, this would require that such initial galaxies were always small objects.
This, however, is not confirmed by observations. Astronomers at Case Western Reserve University say the Webb Telescope – the world’s most accurate space observation tool – has not yet detected faint signals that should come from these small, primitive fragments of galaxies in the early universe. Instead, these are much larger and brighter than models assume.
The researchers note that these observations point more to the MOND model of galaxy formation. It assumes that it works in a different way than Newton’s assumptions when it is weaker.
– MOND predicts that the mass that becomes a galaxy accumulates rapidly and initially expands outward with the rest of the universe. The stronger force of gravity slows and then reverses the expansion, and the material collapses on itself to form a galaxy. In this theory, dark matter does not exist at all – says the content statements for research by scientists from Case Western Reserve University.
However, these are speculations at the moment, because MOND fills a surprising gap in these observations and cannot be applied to other space observations. In turn, the dark matter theory fits many observations, but does not fully explain the phenomena predicted by MOND.
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