Assertion: asteroid belt's asteroid | /r/CapableOf | hit vesta
Facets:
value: during the last 3.5 billion years
type: TEMPORAL
Source sentences:
text: Scientists on the Dawn team estimate that about 300 dark asteroids with diameters ranging from one to 10 km (0.6 to six miles) hit Vesta during the last 3.5 billion years.