What astronomical limit must a white dwarf approach to trigger a Type Ia Supernova explosion?
Answer
Chandrasekhar limit ($1.4 M_{ ext{ extodot}}$)
Type Ia Supernovae occur when a white dwarf star accretes mass from a companion star until it reaches the Chandrasekhar limit, which is specified as $1.4 M_{ ext{ extodot}}$, initiating runaway fusion.
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