Assertion: moon's orbit | /r/HasProperty | elliptical
Facets:
Source sentences:
text: Because the Earth’s orbit is elliptical, the lengths of the months vary from 29.2 to 31.2 days.
text: The Moon's orbit is elliptical rather than perfectly round, so the length of a lunar moon varies, ranging from 29.18 days to 29.93 days and averaging 29 days, 12 hours, 44 minutes, and 2.8 seconds.