Assertion: observed meteor | /r/CreatedBy | object
Facets:
Source sentences:
text: This definition was useful at the time because, with the exception of the Tunguska event, all historically observed meteors were produced by objects significantly smaller than the smallest asteroids observable by telescopes.
text: This definition was useful at the time because, with the exception of the Tunguska event, all historically observed meteors were produced by objects significantly smaller than the smallest asteroids observable by telescopes.