THE EARTH The Earth's Place In Space: Despite its own special conditions,the Earth is in some ways similar to the other inner planets the group of planets nearer to the sun.Of these planets,Mercury is the closest to the sun;Venus is second;the Earth is third ;and Mars is fourth.All of these planets, including the Earth,are basically balls of rock.Mercury is the smallest in size. Its diameter is about …showed first 75 words of 224 total…

…showed last 75 words of 224 total…These four outer planets are also much less dense than the inner planets. The exact size or mass of Pluto, the most distant planet ,is not known. Its composition is also a mystery.All that is known for sure about Pluto is its orbit.Pluto's average distance from the sun is almost 40 times that of the Earth. Bibliography gives descriptive detail about the world we live in.useful in science projects.(i got an A+).