Assertion: solar system's object | /r/HasProperty | discovered
Facets:
Source sentences:
text: Many trans-Neptunian objects (TNOs) have been discovered; in many cases their positions in this list are approximate, as there is frequently a large uncertainty in their estimated diameters.
text: So, rather increase the number of planets each time a new object was discovered the definition of planets was redefined to exclude objects such as Pluto and a new category called dwarf planets was designated for Pluto.