Question

what does it forms when a massive star dies

Answer 1

Answer:

Most stars take millions of years to die. When a star like the Sun has burned all of its hydrogen fuel, it expands to become a red giant. After puffing off its outer layers, the star collapses to form a very dense white dwarf.

Hope it helps you

Answer 2

Answer:

A massive star becomes either a neutron star or a Black hole depending on how great the value is from The Chandrashekhar Limit