Does a star collapse in on itself before going supernova?

Question

Remember reading it somewhere but can't be sure.

Answer 1

Type II do (and Type 1b and 1c too)

Type 1a are white dwarf accreting mater from a nearby star until that matter reach an explosive state, there is no collapse in that mechanism.

Answer 2

yes becasue as you already now super nova is an explosion and just like newton said. for every action there is an equal and opposite reaction. so for every explosion there is and implosion. so to answer your question yes it does.

Answer 3

Yes.  After the core of an aging massive star ceases to generate energy from nuclear fusion, it may undergo sudden gravitational collapse into a neutron star or black hole, releasing gravitational potential energy that heats and expels the star's outer layers.  

Answer 4

Stars greater than two and a half times the mass of the sun, their fate is even more exotic. The force of gravity is great enough to produce iron in the center of the star from fusion. Iron is the heaviest substance that a star can make in its life because heavier elements require more energy to fuse together than they release, so the star collapses. For massive stars, this collapse is so violent that it causes a huge, catastrophic explosion known as a supernova.  

Answer 5

Yes, the collapse, and subsequent spike in pressure/temperature

is the trigger for the fast reactions that power the event.

Answer 6

Yes, a star supernovas as a result of it rapidly collapsing.

Answer 7

yes

Answer 8

Yes, a star collapsing is what is believed to be what results in a supernova.

Answer 9

Well, kinda. It IS due to gravitational force, but it first is centered at the core.  If there's enough matter pushing in, the energy caused by that force would allow just one more burst of nuclear fusion, resulting in a shockwave which blows out the outermost layers.