Month: September 2022

LIFE THE UNIVERSE AND EVERYTHING. “Since this Galaxy began, vast civilizations have risen and fallen, risen and fallen, risen and fallen so often that it's quite tempting to think that life in the Galaxy must be: (a) something akin to seasick, space-sick, time sick, history sick or some such thing, and (b) stupid.” https://lnkd.in/ei-_8xs6 View in LinkedIn

Small obscure detail in marly limestone in old town Girona. View in LinkedIn

BETTER NEW THEORY. “It is related to the fact that galaxies and clusters have very different length scales. In the presence of gravity, the temperature is not constant in space at equilibrium.” https://www.mdpi.com/1099-4300/21/11/1035/htm View in LinkedIn

OLD FAILINGS. “If we naively use MOND at the cluster or cosmic scale, we would be missing the pressure and cosmological constant terms, which could be significant.” (MOND = Milgrom’s theory of modified Newtonian dynamics). https://www.mdpi.com/1099-4300/21/11/1035/htm View in LinkedIn

THE HOPE. “This may explain why MOND does not work well at the cluster and cosmic scales, whereas MDM works at both the galactic and cluster scales and is expected to be completely compatible with cosmology.” (MOND = Milgrom’s theory of modified Newtonian dynamics; MDM = Modified Dark Matter). https://www.mdpi.com/1099-4300/21/11/1035/htm View in LinkedIn

NEW TERRITORY. “MDM as Puffy Dark Matter. MDM quanta obey infinite statistics. Hence they are extended and the well-known tools of effective field theory are inadequate. How they interact with ordinary matter and how they self-interact remain to be investigated.” (MDM = Modified Dark Matter). https://www.mdpi.com/1099-4300/21/11/1035/htm View in LinkedIn

LINKING BACK. “On the other hand, we can heuristically argue that MDM may enjoy similar properties as DM that are known to have finite size (and hence, in a way, extended).” (MDM = Modified Dark Matter; DM = Dark Matter). https://www.mdpi.com/1099-4300/21/11/1035/htm View in LinkedIn

PUFFY DM “been shown to be successful in explaining observations across a wide range of mass scales spanning dwarf galaxies of the THINGS sample, low-surface-brightness spiral galaxies and clusters of galaxies including the Bullet Cluster. It remains to be seen if MDM enjoys similar successes but the prospects look promising.” (MDM = Modified Dark Matter). https://www.mdpi.com/1099-4300/21/11/1035/htm View in LinkedIn

PLANT ROOT ARCHVE. “Digitized by the Wageningen University & Research, the extensive archive is the culmination of 40 years of research in Austria that involved cultivating and carefully retrieving developed plant life from the soil for study. It now boasts more than 1,000 renderings of the winding, spindly roots, some of which branch multiple feet wide.” https://lnkd.in/eN8QNYFd View in LinkedIn

Barcelona’s White Cross hand surgery institute. View in LinkedIn