Maybe Not. Iâve been talking about the death of the total cholesterol paradigm for ten years, and now the research is so strong that itâs time to send flowers. The total cholesterol, with its âgoodâ (HDL) and âbadâ (LDL) cholesterol paradigm, is dead. Taking its place is a new model of vascular biology, epigenomics, and nutragenomicsâhow foods (and supplements) influence heart health.
delta Cephei. The namesake star in the very important class of stars known as Cepheid variables, this star formed part of the original study in which Henrietta Leavitt first discovered that the periods of luminosity were related to their absolute luminosity.This has proved to be an important distance measuring tool.amed after delta-Cephei, Cepheid Variables are the most important type of variable because it has been discovered that their periods of variability are related to their absolute luminosity.
The Perseids always put on a good show.. The Perseid meteors appear to radiate from a point between the constellations Perseus and Cassiopeia, in the northeastern section of the sky. The 2012 Perseid meteor shower display peaks on Aug. 12.