Question

When a supergiant explodes, a occurs.

Answer 1

Answer:

When a supergiant explodes, a SUPERNOVA occurs.

A supernova may leave behind a NEUTRON STAR, which is the size of a large city.

When the outer portion of a red giant expands and is blown away, a WHITE DWARF is left behind.

The most-massive stars may become BLACK HOLES, which are not directly detectable.

Answer 2

Answer:

1.) Supernova

2.) neutron star

3.) white dwarf

4.) blach holes

Explanation:

E2020