Assertion: heliosphere's wind | /r/CapableOf | expand at supersonic speed
Facets:
value: radially
type: MANNER
value: from the sun
type: LOCATION
Source sentences:
text: The solar wind, which expands radially from the Sun at supersonic speed, blows a huge cavity - the heliosphere - into the surrounding interstellar cloud, filling it with solar material and magnetic field.