While most people recognize that a leader’s mood—and how he or she impacts the mood of others—plays a significant role in any organization, emotions are often seen as too personal or unquantifiable to talk about in a meaningful way. But research in the field of emotion has yielded keen insights into not only how to measure the impact of a leader’s emotions but also how the best leaders have found effective ways to understand and improve the way they handle their own and other people’s emotions. Understanding the powerful role of emotions in the workplace sets the best leaders apart from the rest—not just in tangibles such as better business results and the retention of talent, but also in the all-important intangibles, such as higher morale, motivation, and commitment.
Over a long period of time, the slightly denser regions of the nearly uniformly distributed matter gravitationally attracted nearby matter and thus grew even denser, forming gas clouds, stars, galaxies, and the other astronomical structures observable today.  The details of this process depend on the amount and type of matter in the universe. The four possible types of matter are known as cold dark matter , warm dark matter , hot dark matter , and baryonic matter . The best measurements available, from Wilkinson Microwave Anisotropy Probe (WMAP), show that the data is well-fit by a Lambda-CDM model in which dark matter is assumed to be cold (warm dark matter is ruled out by early reionization ),  and is estimated to make up about 23% of the matter/energy of the universe, while baryonic matter makes up about %.  In an "extended model" which includes hot dark matter in the form of neutrinos , then if the "physical baryon density" Ω b h 2 is estimated at about (this is different from the 'baryon density' Ω b expressed as a fraction of the total matter/energy density, which as noted above is about ), and the corresponding cold dark matter density Ω c h 2 is about , the corresponding neutrino density Ω v h 2 is estimated to be less than .