A Star Is Born—With Difficulty

"Physics is hard to understand but always amaze me, sometimes its explain anything. for me by understanding physics and genetic, perhaps we can get the theory of everything. The section of "amazing physics" is the section for me to share with readers what are the mystery of physics, that very complicated like the mystery of DNA code."

Is very hard to be a superstar right? Same with formation of the universe star. They have a long process and the astronomy not fully understand overall of the process.In the simplest terms, the process represents
the victory of gravity over pressure. It starts with a vast cloud of gas and dust floating in interstellar space. If the cloud—or, more often, a dense part of such a cloud called a core—is cool and dense enough, the inward pull of its gravity overpowers the outward push of gaseous pressure, and it begins to collapse under its own weight. The cloud or core becomes ever denser and hotter, eventually sparking nuclear fusion. The heat generated by fusion increases the internal pressure and halts the collapse. The newborn star settles into a dynamic equilibrium that can last millions to trillions of years.

The theory is self-consistent and matches a growing body of observations. Yet it is far from complete. Every sentence of the above paragraph cries out for explanation. Four questions, in particular, trouble astronomers. First, if the dense cores are the eggs of stars, where are the cosmic chickens? The clouds must themselves come from somewhere, and their formation is not well understood. Second, what causes the core to begin collapsing? Whatever the initiation mechanism is, it determines the rate of star formation and the final masses of stars.

Third, how do embryonic stars affect one another? The standard theory describes individual stars in isolation; it does not say what happens when they form in close proximity, as most stars do. Recent findings suggest that our own sun was born in a cluster, which has since dispersed. How does growing up in a crowded nursery differ from being an only child?

Fourth, how do very massive stars manage to form at all? The standard theory works well for building up stars of as much as 20 times the mass of the sun but breaks down for bigger ones, whose tremendous luminosity should blow away the cloud before the nascent star can accumulate the requisite mass. What is more,massive stars blast their surroundings with ultraviolet radiation, high-velocity outflows and supersonic shock waves. This energy feedback disrupts the cloud, yet the standard theory does not take it into account.

The 4 questions arise too fill the gaps of how a star is form. A lot of mystery to solved it.