Assertion: nickel | /r/AtLocation | supernova
Facets:
value: after the core-collapse
type: TEMPORAL
Source sentences:
text: This suggests that most nickel is produced in supernovas in the r-process of neutron capture from nickel-56 immediately after the core-collapse, with any nickel-56 that escapes the supernova explosion rapidly decaying to cobalt-56 and then stable iron-56.