If the core of a supernova contains about one solar mass, the core will become a

A solar mass of above 1.4 will become a neutron star according to the Chandrasekhar limit, therefore if there is 1 solar mass it will collapse to form a white dwarf.a solar mass of above 1.4 will become a neutron star according to the Chandrasekhar limit, therefore if there is 1 solar mass it will collapse to form a white dwarf.

Hope this helps!

That big glowy thing in the sky is called the sun