Assertion: moon's position | /r/HasProperty | every two hours
Facets:
value: approximately
type: TEMPORAL
Source sentences:
text: On Nov. 10, LADEE began gathering science data and on Nov. 20, the spacecraft entered its science orbit around the moon's equator at an altitude of eight to 37 miles (12-60 kilometers) above the surface; a unique position that allows the spacecraft to frequently pass from lunar day to lunar night, approximately every two hours.