[Answer] Which factor causes gas and dust to pull together during the first stage of star formation?densitygravityheatpressure

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Which factor causes gas and dust to pull together during the first stage of star formation?densitygravityheatpressure

The study of galaxy formation and evolution is concerned with the processes that formed a heterogeneous universe from a homogeneous beginning the formation of the first galaxies the way galaxies change over time and the processes that have generated the variety of structures observed in nearby galaxies. Galaxy formation is hypothesized to occur from structure formation theories as a …

Stellar evolution is the process by which a star changes over the course of time. Depending on the mass of the star its lifetime can range from a few million years for the most massive to trillions of years for the least massive which is considerably longer than the age of the universe.The table shows the lifetimes of stars as a function of their masses.

Star formation – Wikipedia

Star formation – Wikipedia

Gravitational collapse – Wikipedia

Stellar evolution – Wikipedia

During the merger if there is enough gas the increased gravity will force the gas to the centre of the forming elliptical galaxy. This may lead to a short period of intensive star formation called a starburst. In addition the infalling gas will feed the newly formed black hole transforming it into an active galactic nucleus. The force of these interactions will likely push the Solar System into the new galaxy’s outer …

A more compact site of star formation is the opaque clouds of dense gas and dust known as Bok globules so named after the astronomer Bart Bok. These can form in association with collapsing molecular clouds or possibly independently. The Bok globules are typically up to a light year across and contain a few solar masses.

Gravitational collapse is the contraction of an astronomical object due to the influence of its own gravity which tends to draw matter inward toward the centre of gravity. Gravitational collapse is a fundamental mechanism fo…

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