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COINCIDENT IN TIME. “The discovery of the Chicxulub impact crater in the Yucatan Peninsula on the Gulf of Mexico confirmed, from its size and structure, that a large celestial object had collided with the Earth at the time that the mass extinctions had occurred.” https://lnkd.in/e5hTuW74 View in LinkedIn

THIN EGG SHELL. “A study of Hypselosaurus dinosaur eggs from southern France and the Spanish Pyrenees concluded that shell thickness was abnormally thin in up to 90 % of the samples.” https://lnkd.in/e5hTuW74 View in LinkedIn

THE LINK. “The source of that iridium was proposed to be from a huge asteroid or comet that collided with the Earth, coinciding with the time of the mass extinctions.” https://lnkd.in/e5hTuW74 View in LinkedIn

CHICKEN DEFICIENCY STUDIES. “From this pathology it was suggested that the embryos were unable to mobilise Ca from the shell and that the consequent hypocalcaemia caused muscle weakness which prevented the chicken from breaking the egg shell.” https://lnkd.in/e5hTuW74 View in LinkedIn

IRIDIUM FINGERPRINT. “The case for a catastrophic cause of mass extinction was strengthened by the discovery of a worldwide enrichment of the rare element iridium in a narrow band of geological strata formed 66 Mya.” https://lnkd.in/e5hTuW74 View in LinkedIn

PROBING WARM DARK MATTER. “The linear power spectrum, and hence the mass of WDM particles, can be probed via the Lyman-alpha forest. The Lyman-alpha forest is the absorption lines in spectra of galaxies and quasars from the Lyman-alpha electron transition in intergalactic neutral hydrogen ‘clouds’.” (WDM = Warm dark matter). https://lnkd.in/e6ifiQMn View in LinkedIn

SUPPRESSION OF STRUCTURES. “Warm dark matter (WDM) is semi-relativistic at creation. A concrete candidate is the sterile neutrino. Thermal WDM free streaming erases perturbations and suppresses the power spectrum on (small) mass scales, and consequently structure formation is suppressed below this mass.” (WDM = Warm dark matter). https://lnkd.in/e6ifiQMn View in LinkedIn

A half-shuttered churchnon the edge of Quart (Girona) whose bell still works and where elder people still gather on Sunday mornings. View in LinkedIn

ELOQUENT BUT FORGOTTEN. “Giambattista Vico (1668-1744) was Professor of Latin Eloquence at the University of Naples. His works, first written in Latin, and then later in Italian, were not understood in his lifetime and have not been widely known or understood since. Vico has remained an obscure and eccentric thinker.” https://lnkd.in/eEHaWAZf View in LinkedIn

INHOMOGENEITY. “Particle interactions can lead to primordial and/or evolutionary deviations from vanilla CDM. Primordial effects modify the evolution of density perturbations, and hence, for instance, the initial halo mass function.” (CDM = Cold Dark MatterCold dark matter). https://lnkd.in/e6ifiQMn View in LinkedIn