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Which planet has the greatest density in the Solar System?
SpacePlanets
Quick Answer
Earth is the densest planet, with an average density of about 5.51 g/cm³. No other major planet in the Solar System is denser overall.
The Full Story
Earth has the highest average density of any planet in the Solar System. Its density is about 5.51 grams per cubic centimetre, reflecting a large iron-rich core and a rocky composition. Although Mercury is very metal-rich, Earth's overall structure makes it slightly denser. Density is one reason Earth is classed as a terrestrial planet, rather than a gas giant or ice giant.
Key Facts
1.Earth density: about 5.51 g/cm³
2.Earth is the densest planet
3.Dense iron core increases its average density
YouTube Angle
Suggested video title for this topic:
"The densest planet is the one we live on."