Just how fast does a star go from it's beginning gaseous glow of swirling matter,to a shining ball of fusion??

Question

Thanks for your answer...Tom Science 4

Answer 1

It depends on all kinds of variables such as the density of the gas cloud and its temperature. Every star is unique.

The Pleides star cluster is a star nursery and stars are coalescing out of interstellar dust before our eyes and self igniting. Most of these stars are around 50,000 years old so that they where made yesterday in astronomical terms. This suggests that the birth of a star can occur in a relatively short time.

Answer 2

Massive stars 20solar masses take as many as 100 million years to form but they are very short lived 10 million years or less.
Stars like our sun form very quickly less than 10 million years
They are very long lived,maybe more than 10 billion years
The sun is formed dynamically when the debris from super nova crashes into the hydrogen field that makes up our sun.
The massive star are formed passively from the quantum effect in a pristine hydrogen field.