Assertion: moon's gravity | /r/CapableOf | impact the orbit of the moon
Facets:
Source sentences:
text: The main reason why the orbit of the moon is not a perfect circle is that there are a lot of tidal, or gravitational, forces that are pulling on the moon," Petro told Space.com, adding that the gravity of the Earth, sun and planets of our solar system all impact the orbit of the moon.