Assertion: asteroid | /r/HasProperty | planet
Facets:
value: at the time
type: TEMPORAL
value: formerly
type: DEGREE
Source sentences:
text: As I understand it, the popular theory that the asteroids were formerly a planet which broke up no longer has any serious credence in the astronomical community.
text: The first asteroids were called planets, and later when it became clear that there were many small objects between Mars and Jupiter, they were called asteroids.
text: Asteroids are rocky and metallic objects that orbit the Sun but are too small to be considered planets.
text: Because Olbers already had credit for discovering a planet (Pallas; at the time, the asteroids were considered to be planets), he gave the honor of naming his new discovery to German mathematician Carl Friedrich Gauss, whose orbital calculations had enabled astronomers to confirm the existence of Ceres, the first asteroid, and who had computed the orbit of the new planet in the remarkably short time of 10 hours.
text: At first, astronomers thought that the asteroids, especially Ceres and Pallas were actually planets.