During this time a balance is met between gravity wanting to shrink the star and heat wanting to make it grow bigger. Early star formation is a bit of a puzzle for astronomers, since all the stars that we can see formed out of molecular gas and dust, which are produced in stars. We can still see leftovers of this process everywhere in the Solar System. Gravity pulls the dust and gas together to form a protostar. In fact, the space between stars is not empty; it is nearly empty, but not entirely. This is the state of the star for the majority of its life and is called the "main sequence". The very massive stars form first and explode into supernova. Main Sequence Star - Once a star, it will continue to burn energy and glow for billions of years. Stars form from the gravitational collapse of large clouds of interstellar material. By Andrea Thompson 19 January 2009. ; Random turbulent processes lead to regions dense enough to collapse under their own weight, in spite of a hostile environment. Stars are formed from massive clouds of dust and gas in space. Realize that no one saw these stars form. ; Formation of structure within the gas clouds, due to "turbulence" and activity of new stars. This makes shock waves into the molecular cloud, causing nearby gas to compress and form more stars. Dense nebulae. Some stars are only just beginning to form, others are in the Main Sequence and some have begun to die. Star formation is the process by which dense regions within molecular clouds in interstellar space, sometimes referred to as "stellar nurseries" or "star-forming regions", collapse and form stars. Instead, the properties of these stars, along with their location near gas and dust clouds where astronomers think that stars form is the basis for the belief that they are recently formed stars. Steps to the formation of stars and planets: Clouds of gas form within galaxies. High density regions of the interstellar medium (ISM) form clouds, or nebulae, where star formation takes place.. ; As blob collapses, a disk forms, with growing "protostar" at the center. This allows a type of stellar coherence (young stars are found near other young stars) to build up, and is responsible for the pinwheel patterns we see in galaxies. The process of star formation takes around a million years from the time the initial gas cloud starts to collapse until the star is created and shines like the Sun. How Massive Stars Form: Simple Solution Found. As the gases come together, they get hot. In this article we explain the process of star formation for regular Sun-like stars. In the dense nebulae where stars are produced, much of the hydrogen is in the molecular (H 2) form, so these nebulae are called molecular clouds. 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