In a massive star destined for core-collapse, what element ultimately signals the end of energy-releasing fusion?
Answer
Iron
Massive stars fuse elements up to iron; however, fusing iron consumes energy rather than releasing it, removing the outward pressure required to fight gravity.
Related Questions
What characteristic defines stars capable of undergoing a core-collapse supernova?What quantum mechanical effect provides resistance against gravitational collapse in lower-mass stars?What stellar remnant is formed by stars similar to the Sun (up to about 8 M⊙)?In a massive star destined for core-collapse, what element ultimately signals the end of energy-releasing fusion?What is the primary role of Type Ia supernovae in astrophysics?What mass limit must a white dwarf exceed to trigger a Type Ia supernova?What is the theoretical final state for a low-mass star like the Sun after it fades from being a white dwarf?How does the energy generation from fusing iron in a star's core differ from fusing lighter elements?Which condition is absolutely required for a Type Ia supernova to occur?What is the primary factor that dictates a star's entire life path and ultimate fate upon its formation?