Density Comparison
NEPTUNE DENSITY
Ice Giant Composition
Unlike rocky Mercury, Neptune is composed mostly of "ices" (water, ammonia, methane) and a thick hydrogen-helium atmosphere.
Much lower than Mercury's 5.43 g/cm³.
Huge mass, but spread out.
Density Leader
Compact Giant. Packing 17 Earth-masses into a concentrated sphere, Neptune is the densest giant in the solar system, making it a gravitational powerhouse.
- 📊 1.64 g/cm³ (Densest of the four giants).
- ⚖️ 18% more massive than its twin, Uranus.
- 💎 Heavy core + compressed icy mantle.
Density Duel
Saturn vs. Neptune. One would float like a cork; the other would sink like a stone. Neptune is 2.4x denser than its golden cousin.
- ☁️ Saturn: 0.687 g/cm³ (Fluffy Gas).
- 🧊 Neptune: 1.64 g/cm³ (Compact Ice).
- ⚖️ Impact: Higher density drives Neptune's supersonic winds.
Terrestrial Reality
Rock vs. Ice. Earth’s iron-rich core makes it 3.3x denser than Neptune, proving that size isn't everything when it comes to material compactness.
- 🌍 Earth: 5.51 g/cm³ (Rock & Metal).
- 🔵 Neptune: 1.64 g/cm³ (Ice & Gas).
- 📐 Delta: 3.3x density gap.
Twin Discrepancy
Small but Mighty. Neptune proves that mass wins over volume. By packing 18% more matter into a smaller frame, it generates a gravitational field that dwarfs its twin.
- 📏 Uranus: Larger volume, lower density.
- 💎 Neptune: Smaller volume, higher mass.
- ⚖️ Gravity: 1.14g vs. 0.89g (Uranus).
Paper
DENSITY LOG 💎
Subject: Mass-Volume Ratio. Target: Planetary Core Solvency.
Sources
NEPTUNE VS SATURN
Neptune is the densest giant planet at **1.64 g/cm³**. Saturn is the least dense (0.69 g/cm³), meaning it would float in water.
DENSITY DATAICE GIANT COMPOSITION
Neptune's higher density compared to Jupiter comes from its larger proportion of heavier elements like Oxygen, Carbon, and Nitrogen.
CORE ANALYSISTERRESTRIAL GAP
For comparison, Earth's density is **5.51 g/cm³**. Neptune's gas envelope significantly lowers its overall average density.
EARTH COMPARISON