How do stars form in galaxies?

Can you explain how stars form in galaxies?

Sure! Stars form in galaxies from clouds of gas and dust, primarily hydrogen. When these clouds collapse under their own gravity, they create dense regions that eventually ignite nuclear fusion, leading to star formation.

What role does gravity play in this process?

Gravity is crucial; it pulls the gas and dust together, increasing pressure and temperature until nuclear fusion starts, marking the birth of a star.

Are there different types of stars that form?

Yes, stars can vary widely in size, temperature, and brightness. They can be classified into categories like main-sequence stars, giants, and supergiants, depending on their mass and stage in the stellar lifecycle.

How long does it take for a star to form?

The formation of a star can take millions of years, depending on the mass of the star and the conditions in the surrounding molecular cloud.

What happens to stars after they form?

After forming, stars go through various stages in their lifecycle, including main sequence, red giant, and eventually end as white dwarfs, neutron stars, or black holes, depending on their mass.