Assertion: comet | /r/HasProperty | bright
Facets:
value: consistently
type: DEGREE
value: very
type: DEGREE
value: usually
type: DEGREE
Source sentences:
text: There is no official definition; often the term is attached to comets such as Halley's Comet, which are bright enough to be noticed by casual observers who are not looking for them, and become well known outside the astronomical community.
text: Halley's Comet, for example, is usually very bright when it passes through the inner Solar System every seventy-six years, but during its 1986 apparition, its closest approach to Earth was almost the most distant possible.
text: From February 25 through the 27th, observers reported that the comet was bright enough to study during full daylight.
text: While they expected the comet would be bright when it arrived close to Earth, predictions are tricky when it comes to comets — they are essentially just balls of ice and dust that erupt in ways that are hard to anticipate.
text: Among the comets with short enough periods to have been observed several times in the historical record, Halley's Comet is unique in that it is consistently bright enough to be visible to the naked eye while passing through the inner Solar System.