Assertion: moon | /r/HasProperty | observed
Facets:
Source sentences:
text: The Moon may be observed by using a variety of optical instruments, ranging from the naked eye to large telescopes.
text: \displaystyle (1-\cos e)/2=\sin ^{2}(e/2)} , where e {\displaystyle e} is the elongation (i.e., the angle between Moon, the observer (on Earth) and the Sun).
text: When a full moon is observed, it is positioned on the opposite side of the Earth to the sun, and when a new moon is experienced, the moon and the sun are on the same side of the Earth.