- Who
- Earth
- What
- 5,513 total number
- Where
- Not Applicable ()
The densest planet in the Solar System is Earth, which has an average density of 5,513 km/m³ (344 lb/cu ft). The next most dense planet in Mercury, at 5,240 kg/m³ (327 lb/cu ft).
The density of the material that makes up the Earth varies, from around 2,830 kg/m³ (176 lb/cu ft) in the Earth's crust to roughly 13,000 kg/m³ (811 lb/cu ft) in the inner core.
