Jupiter - A Rockless Planet, Earth’s Giant Shield
Origin & Age
Earth is 4.6 billion years old; Jupiter formed around the same time. As the Solar System’s largest planet, Jupiter reshaped the young system and set the stage for Earth’s stability.
Jupiter Specs
| Item | Value | Versus Earth |
|---|---|---|
| Age | ~4.6 billion years | Same |
| Diameter | 142,984 km | ~11× Earth |
| Mass | 318 Earth masses | — |
| Gravity (cloud tops) | ~2.5 g | ~2.5× Earth |
| Mean temp. (upper atmosphere) | ~−110°C | Colder |
| Atmosphere | ~75% H2, ~24% He; traces of CH4, NH3 | Not breathable |
| Can humans move bare-skinned? | No (fatal pressure & winds) | Impossible |
| With spacesuit? | No (no surface; crushing pressure) | Impossible |
Structure & Composition
Jupiter has no solid surface. Layers transition from molecular hydrogen clouds to liquid hydrogen, then to a deep layer of metallic hydrogen that generates a powerful magnetic field. A small rocky/icy core may exist, but it is buried beneath immense pressure.
Rock Specs (Materials View)
| Rock | Key traits | Exists on Earth? | Uses (material) | Notes |
|---|---|---|---|---|
| Surface rock | None — no solid surface | — | — | All layers are gas/liquid; “ground” is absent |
| Granite | Requires water-assisted differentiation and plates | Abundant on Earth | Lanterns, monuments, sculpture, gravestones | Cannot form on Jupiter |
Earth’s Giant Shield
Jupiter’s gravity perturbs or captures comets and asteroids, reducing impacts on the inner planets. This “shielding effect” likely helped preserve Earth’s long-term habitability and human history.
Environment & Human Activity
There is no land to stand on. Winds, radiation, and pressure increase with depth, making bare-skin activity impossible and spacesuited EVAs impossible. Jupiter can only be studied by orbiters and flybys.
Contrast with Earth
Jupiter is a rockless hydrogen–helium world. Earth, with water and plate tectonics, built granite continents—the physical stage for culture and civilization.
Summary
- Origin: ~4.6 Ga; largest planet, reshaping the Solar System
- Composition: H/He layers, metallic hydrogen; possible deep core
- Human viability: bare-skin no / spacesuit no (no surface)
- Granite cannot form without water and plates
Jupiter has no granite and cannot produce the granite products sold by japanstones.shop.