Problem: One explanation of why the planets near the Sun are composed mainly of rock and iron is that ... Need Assignment Help?
- the Sun's magnetic field attracted all the iron in the young Solar System into the region around the Sun.
- the high temperature in the inner part of the Solar System prevented ices and gases from condensing near the Sun.
- the Sun's gravity only acts on solid materials, and only iron and rock condensed into a solid
- the Sun is made mostly of iron, so gas ejected from its surface cooled and condensed to form iron-rich planets.