Calculated by the lab
- Mass from radius and density
- Surface gravity
- Escape velocity
💪 Super-Earth
Increase Earth's radius and density, then compare mass, gravity, and escape speed.
Mass, gravity, and escape speed rise; thicker air is not assumed.
Building the laboratory: star, orbit, planet, atmosphere...
What actually happens
This scenario grows Earth to 1.6 times its radius and 1.1 times its average density. From those two inputs the lab computes a much larger mass, stronger surface gravity, and higher escape velocity.
The atmosphere control remains Earthlike. Stronger gravity can help a planet retain gases, but atmospheric thickness also depends on formation, temperature, chemistry, stellar radiation, impacts, and time. A super-Earth is not guaranteed to have thick air.
Statements about rain, mountain height, human weight, or rocket performance are useful physical context. The simulator does not calculate weather, geology, bodies, engines, or a mass-radius relation for a particular rocky composition.
How the simulation unfolds
Each step is labeled so you can tell a calculated result from an explanatory visual or wider scientific context.
- Changed input
Grow the rocky planet
Radius becomes 1.6 Earths and density becomes 1.1 Earths while the atmosphere input stays Earthlike.
- Computed
Bulk properties rise
The lab derives mass, surface gravity, and escape velocity from radius and density.
- Illustrated
The planet appears larger
Close-up size is adjusted for readability and is not a to-scale Earth comparison.
- Scientific context
Atmospheres have histories
Higher escape speed favors gas retention, but it cannot determine atmospheric pressure by itself.
What is computed, illustrated, and not modeled
Shown to explain the result
- A visually enlarged rocky world
Outside this model
- Atmospheric pressure
- Mountain deformation and rain speed
- Rocket design and interior structure
Model scope: Radius and density are independent controls here. The lab does not enforce a material composition or predict atmospheric pressure.