Assertion: asteroid belt's asteroid | /r/MadeOf | material
Facets:
value: based on the composition of meteorites
type: OTHER
value: from nickel
type: OTHER
value: mainly
type: DEGREE
Source sentences:
text: Asteroids are mainly made of materials left over from the formation of the inner solar system words.
text: Asteroids are made of various matter, from nickel to iron to volcanic type materials.
text: Based on the composition of meteorites found on the Earth, most asteroids may be composed of three materials: mostly (92.8 percent) silicates (stone); metals (5.7 percent) iron and nickel; and the rest as a mix of the those materials and carbon-rich substances.
text: Asteroids are thought to be made of materials left over from the formation of the planets.