Assertion: planet | /r/HasProperty | defined word
Facets:
value: according to the international astronomical union
type: OTHER
value: in a 2006 landmark decision
type: TEMPORAL
value: culturally
type: MANNER
Source sentences:
text: Harvard science historian Owen Gingerich, who chairs the IAU planet definition committee, argued at a forum last month that "a planet is a culturally defined word that changes over time," and that Pluto is a planet.
text: According to the International Astronomical Union, in a 2006 landmark decision, a planet is defined as a i) a celestial body that orbits a star, but is not a star itself; ii) is massive enough to have achieved a nearly spherical shape due to its own gravitational accretion, and iii) has cleared it local neighborhood of significant solar system debris.