The life cycle for a particular star depends on its size ... larger nuclei begin to form and the star may expand to become a red giant. When all the nuclear reactions are over, a small star ...

Eventually, the red giant becomes a white dwarf, a star that has ceased nuclear fusion ... begins once again to complete the stellar life cycle. Finally, remnant stars with a mass of less than ...

The life cycle for a particular star depends on its size ... larger nuclei begin to form and the star may expand to become a red giant. When all the nuclear reactions are over, a small star ...

Astronomers suggest there's a giant "star grinder" lurking at the ... happening at the center of our galaxy — a brutal cycle of life and death, right at the core of the Milky Way.