The Density Of Planet Earth Is Almost 5 Times That Of The Sun.

The Density Of Planet Earth Is Almost 5 Times That of The Sun.

-Crazy Facts Of Cosmology.

Earth is densest planet because the Earth is composed of heavier (denser) atoms such as nickel iron, Silicates(rock) , sulfur, basalt, granite, sediment and water. In proportion, the Earth contains only a small percentage of helium and hydrogen. The atmosphere is also denser containing mostly nitrogen, oxygen and ozone.

The sun is the star at the center of the solar system. Its diameter is about 109 times that of Earth and its mass is about 330, 000 times that of Earth. The average density of sun is 1.4g/cm^3. And the average density of EarthVis 5.46 g/cm^3. That means the density of planet Earth is almost 5 times that of sun.

Mercury has proportionally more dense metal than Earth relative to silica, but its lower mass means that it's not as gravitationally compressed Earth making it slightly less dense overall.

I would assume that this is due to the formation of our solar system from the origin gas and dust nebula which spun as it condensed. The spinning would have acted like a centripetal force placing the heavier atoms further from the center and leaving the lighter elements of hydrogen and helium to form the sun.