Awasome The Earth And The Solar System References. Web earth, third planet from the sun and the fifth largest planet in the solar system in terms of size and mass. We observe our planet’s oceans, land, ice, and atmosphere, and measure how a change in one drives change in.

Earth is also unique in terms. Web solar system, assemblage consisting of the sun and those bodies orbiting it: Web while earth is only the fifth largest planet in the solar system, it is the only world in our solar system with liquid water on the surface.