In the massive star case, the core of a massive star may undergo sudden collapse, releasing gravitational potential energy as a supernova. ... Supernovae are a major source of elements in the interstellar medium from oxygen to rubidium. The expanding shock waves of supernovae can trigger the formation of new stars.

How do stars form?

Stars form from an accumulation of gas and dust, which collapses due to gravity and starts to form stars. ... Stars are born and die over millions or even billions of years. Stars form when regions of dust and gas in the galaxy collapse due to gravity. Without this dust and gas, stars would not form.

Where do stars come from?

Star Formation

Stars are born within the clouds of dust and scattered throughout most galaxies. A familiar example of such as a dust cloud is the Orion Nebula. Turbulence deep within these clouds gives rise to knots with sufficient mass that the gas and dust can begin to collapse under its own gravitational attraction.