Assertion: nebula's planet | /r/CapableOf | spiral inward migration
Facets:
value: inward,
type: DEGREE
Source sentences:
text: Leaving aside formation from the accretion disk surrounding the white dwarf, there are two ways a planet could end in a close orbit around stars of this kind: by surviving being engulfed by the star during its red giant phase, and then spiralling inward, or inward migration after the white dwarf has formed.