Iron is the main ingredient.
It is mostly gas, but it has a solid core.
Venus is made up of an iron core and rocky mantle. While it's atmosphere mostly consists of carbon dioxide and nitrogen.
Comets are mostly made up of ice. They usually have a metallic core high in nickel. The tail of a comet is actually the ice melting as it passes a heat source.
The Earth's inner core is mostly made up of solid iron due to the immense pressure within the planet that can keep iron solid even at high temperatures. The outer core is liquid iron, and the Earth's mantle and crust are composed of silicate rocks.
Earth's outer core is not made of rock. It is made of molten metal; mostly iron and nickel.
I believe it is IRON.
The Inner (solid) and Outter (liquid) Core are made up of Nickel and Iron.
It is thought to be mostly iron.
The Inner Core
The outer core of the Earth is mostly made up of melted iron. This molten layer surrounds the solid inner core and contributes to the generation of the Earth's magnetic field.
Earth is mas mostly of silicate minerals with a core made mostly of iron and nickel.
it is mostly made up of water ice and the center is believed to be metalic
It is mostly gas, but it has a solid core.
Our earth is mostly made up of silicon oxide (sand) and magnesium oxide, extending from the outer core to the crust. The inner core is mostly iron, enriched to 4% nickel. About 70% of the surface is covered with water.
The core of the Earth is mostly made up of solid iron and nickel, with a small liquid outer core surrounding it.
Venus is made up of an iron core and rocky mantle. While it's atmosphere mostly consists of carbon dioxide and nitrogen.
scientists think that the earths core is made up of mostly iron, and contains smaller amounts of copper nickel.