A Star's Size. A star begins its life in a contracting nebula of gas and dust. As the density of the material increases under the influence of gravity, compression heats the material. If the material gets hot enough, hydrogen atoms begin fusing together to form helium atoms, and a star is born. A star will spend most of its life, called the main sequence phase, fusing hydrogen into helium. Click the image to see the animation. It's logical that a large nebula (one with a large amount of mass) will form a large star, and a small nebula will form a small star. However, in addition to a star's initial mass, a star's size also depends on the balance between the inward pull of gravity and the outward push of the energy produced by fusion. The entire sequence of a star's evolution can be described in terms of the changing balance between these two opposing forces.
Abbreviation for monoamine oxidase. MAO monoamine oxidase; see monoamine oxidase inhibitor, under inhibitor. MAO. abbr. monoamine oxidase. MAO. 1 abbreviation for monoamine oxidase. 2 abbreviation for maximal acid output. MAO Abbreviation for: maximum acid output (see there) medical assistance only monoamine oxidase (see there)
Exercise is MedicineÂ® is now officially underway in Europe â the formal contract (MOU) was signed between the âEuropean Initiative for Exercise in Medicine (EIEIM)â and the American partner âExercise is MedicineÂ®â (EIM) during the annual meeting of the American College of Sports Medicine (ACSM) from May 26th San Diego. Read more.