use the drop - down menus to complete the statements about the death of stars. when a supergiant explodes, a…

use the drop - down menus to complete the statements about the death of stars. when a supergiant explodes, a occurs. a supernova may leave behind a , which is the size of a large city. when the outer portion of a red giant expands and is blown away, a is left behind. the most - massive stars may become , which are not directly detectable.

use the drop - down menus to complete the statements about the death of stars. when a supergiant explodes, a occurs. a supernova may leave behind a , which is the size of a large city. when the outer portion of a red giant expands and is blown away, a is left behind. the most - massive stars may become , which are not directly detectable.

Answer

Brief Explanations:

  1. When a supergiant explodes, it is a supernova event.
  2. A supernova can leave behind a neutron - star which is very dense and about the size of a large city.
  3. When the outer part of a red giant is blown away, a white - dwarf is left behind.
  4. The most massive stars can collapse to form black - holes which are not directly detectable as they do not emit light.

Answer:

  1. supernova
  2. neutron star
  3. white dwarf
  4. black hole