Assertion: spacecraft's mission | /r/HasProperty | crashed on the moon
Facets:
value: deliberately
type: MANNER
value: at known locations
type: LOCATION
value: as another active seismic experiment
type: MANNER
value: to induce vibrations
type: PURPOSE
Source sentences:
text: After Apollo 12 placed the second of several seismometers on the Moon,  the jettisoned LM ascent stages on Apollo 12 and later missions were deliberately crashed on the Moon at known locations to induce vibrations in the Moon's structure.
text: 12 and later missions were deliberately crashed on the Moon at known locations to induce vibrations in the Moon's structure.
text: As another active seismic experiment, the S-IVBs on Apollo 13 and subsequent missions were deliberately crashed on the Moon instead of being sent to solar orbit.