Assertion: spacecraft's mission | /r/CapableOf | gather data
Facets:
value: on the planet's magnetic field
type: LOCATION
Source sentences:
text: This mission gathered data on the planet's magnetic field, measured distributions of high-energy electrons and protons in the radiation belts; measured planetary geophysical characteristics, and studied gravity and atmosphere.
text: Each mission lasted longer than the one before and gathered more data.