The process for high-mass stars (eight solar masses or ... process begins once again to complete the stellar life cycle. Finally, remnant stars with a mass of less than 2.2–2.9 solar masses ...

The life cycle ... star forms from massive clouds of dust and gas in space, also known as a nebula. Nebulae are mostly composed of hydrogen. Gravity begins to pull the dust and gas together. As ...

The life cycle ... star forms from massive clouds of dust and gas in space, also known as a nebula. Nebulae are mostly composed of hydrogen. Gravity begins to pull the dust and gas together. As ...