Assertion: celestial sphere's star | /r/HasProperty | above the horizon
Facets:
value: during a 24-hour period
type: TEMPORAL
value: half the time
type: TEMPORAL
value: for 24 hours
type: TEMPORAL
Source sentences:
text: During a 24-hour period, all stars are above the horizon exactly half the time.
text: The elevation angle (or altitude) of the star (h) is the number of degrees that the star is above the horizon.
text: As another example, if the star was 43º above the horizon, we would be (90-43)x60 = 2820
text: During a 24-hour period, all stars are above the horizon exactly half the time.
text: During a 24-hour period, all stars are above the horizon exactly half the time.
text: Ptolemy argued that the Earth was a sphere in the center of the universe, from the simple observation that half the stars were above the horizon and half were below the horizon at any time (stars on rotating stellar sphere), and the assumption that the stars were all at some modest distance from the center of the universe.
text: Those stars within an angular distance from the NCP equal to the observer's latitude are above the horizon for 24 hours---they are circumpolar stars.