The temperature of the early solar system explains why the inner planets are rocky and the outer ones are gaseous.In the inner solar system, only substances with very high melting points would have remained solid. All the rest would have vaoprized. So the inner solar system objects are made of iron, silicon, magnesium, sulfer, aluminum, calcium and nickel. Many of these were present in compounds with oxygen Plzz mark it as brainliest plz plz....