[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

First when gas and dust grains collide they agglomerate by microphysical processes like van der Waals forces and electromagnetic forces forming micrometer-sized particles; during this stage accumulation mechanisms are largely non-gravitational in nature.

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.

Star formation – Wikipedia

Star formation – Wikipedia

Gravitational collapse – Wikipedia

Stellar evolution – Wikipedia

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 millio…

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