What Finally Halts the Core Collapse in the Initial Stages

question 189

Multiple Choice

What finally halts the core collapse in the initial stages of the formation of a Type Ia supernova?

• A) The core becomes a singularity, with all matter concentrated at a single point.
• B) The iron core stiffens when it reaches the density of nuclear matter, producing the core bounce.
• C) The iron core becomes hot enough to begin fusion reactions which produce a uranium core.
• D) The temperature becomes great enough to produce radioactive nuclei.

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