Assertion: terrestrial planet's core | /r/HasProperty | heavy metals
Facets:
Source sentences:
text: Terrestrial planets have similar structures – a core composed of heavy metals which is usually iron, solid surfaces of craters, canyons, mountains and volcanoes and secondary atmospheres (generated through volcanic activity and comet impacts), as opposed to the gas giants which has primary atmospheres (captured directly from the original nebula).
text: The core of the Earth is composed of iron and other heavy elements (density ~8 gm ⁄ cm3).