First 105 words of the document:
Big Bang theory theory of the start of the Universe.
Black hole remnant of a supernova, co massive that light cannot
Neutron star very dense remnant of a supernova, not heavy
enough to form a black hole.
Planetary nebula a dying star which puffs out material into
Red giant star which is fusing helium to form carbon.
Supernova explosion of a star when it becomes unstable at the
end of its life.
White dwarf remnant of a star which has run out of fuel for