Assertion: comet's discovery | /r/Synonym | manx comets
Facets:
value: in the early 21st century
type: TEMPORAL
Source sentences:
text: In the early 21st century, the discovery of some minor bodies with long-period comet orbits, but characteristics of inner solar system asteroids, were called Manx comets.
text: In the early 21st century, the discovery of some minor bodies with long-period comet orbits, but characteristics of inner solar system asteroids, were called Manx comets.
text: In the early 21st century, the discovery of some minor bodies with long-period comet orbits, but characteristics of inner solar system asteroids, were called Manx comets.