Assertion: black hole's formation | /r/HasProperty | studied
Facets:
value: extensively
type: DEGREE
Source sentences:
text: Formation of black holes from the deaths of the first stars has been extensively studied and corroborated by observations.
text: Formation of ordinary (star-sized) black holes from the deaths of the first stars has been extensively studied and supported by observations.
text: Formation of ordinary (star-sized) black holes from the deaths of the first stars has been extensively studied and supported by observations.