Sign in or create your account

Enter your email and we'll send a 6-digit code — no password needed.
We only keep your email and the username you choose. We never share or sell your email, and we don't send marketing — we use it only to email you a sign-in code. Learn more.
Entering orbit…
Habitability
12/ 100
Uninhabitable

Arvles

0

Salt World

Magnetic FieldLow Activity
Why is this a Salt World?Your planet is rich in sodium (11.5%) and chlorine (7.7%) but starved of hydrogen (0.0%), so instead of a water cycle it precipitates its salt into blinding evaporite flats.
Salt worlds need real halite chemistry - sodium and chlorine together, not just one - plus a dry recipe, since any real water cycle would dissolve the crust as fast as it forms. A warm 250-500K band keeps brines mobile enough to precipitate at the surface: halite plains, brine pans, salt-crusted ridges.
Classification Criteria:
✓ Sodium: 11.5% + Chlorine: 7.7% (min 3% each, 12% combined)✓ Hydrogen: 0.0% (<5% - dry enough for evaporites)✓ Temperature: 375K (250-500K warm band)✓ Silicon + Iron + Magnesium: 56.4% (>=15% - a rocky base to salt-crust over)
Habitability ScoreUninhabitable
12
Contributing Factors
water0
No water - the recipe has no hydrogen and oxygen to form it
geology60
Some geological activity provides slow nutrient cycling
rotation100
Optimal rotation period - balanced day/night cycle, moderate weather, and good heat distribution
Organic Chemistry0
Limited organic chemistry potential - chlorine-laced environment attacks organic molecules
atmosphere40
Atmosphere present but composition not ideal for life
temperature40
Extreme temperature - very difficult for life
magnetic Field100
Magnetic field provides radiation protection

Physical Properties

Mass
0.60x Earth (3.58e+24 kg)
Radius
0.84x Earth (5,374 km)
This planet: 0.84× Earth radiusEarth: 1× (baseline)
Surface Gravity
0.84x Earth (8.3 m/s²)
Surface Temperature
375 K (102 °C / 215 °F)
Rotation Period
30.0 hours/day (slower than Earth)
This planet: 30 h/dayEarth: 24 h/day

Orbital Environment

Star Type
M-type (Red Dwarf)
Distance from Star
0.11 AU (16.5 million km)
Orbital Period
24 days

Atmosphere

Thin dry atmosphere with sodium dust and chlorine traces

Elemental Composition

Si - Silicon
32.1%
Fe - Iron
14.1%
O - Oxygen
12.8%

Surface Characteristics

Blinding white evaporite flats - halite plains, brine pans, and salt-crusted ridges

Closest Real Exoplanet

TOI-5716 b90% similar
Orbiting TOI-5716
YoursTOI-5716 b
Mass0.60 × Earth0.84 × Earth
Radius0.89 × Earth0.96 × Earth
Density (composition)4.72 g/cm³5.23 g/cm³
Temperature374.9 K400.0 K
Starlight received3.31 × Earth3.41 × Earth
Star temperature3,050 K3,436 K
Discovered 2025 via transit · 129 light-years awaySource: NASA Exoplanet Archive
Surface views from three worlds: rocky ground under a ringed sky, a cloud deck, and a lit desert

New: Stand on Your World 🏔️

Every planet you build can now be seen from the ground. The terrain, the color of the sky, the weather and what hangs overhead are all read from the same numbers that shape the globe — so a thin-aired world gives you sunlit rock under a near-black sky crowded with stars, a runaway greenhouse seals you under an unbroken sulfur lid, and a gas giant leaves you in the cloud tops with nothing solid beneath you at all. If one of your moons wandered inside the Roche limit, what is left of it arcs overhead as rings.

Sign in or create your account

Enter your email and we'll send a 6-digit code — no password needed.
We only keep your email and the username you choose. We never share or sell your email, and we don't send marketing — we use it only to email you a sign-in code. Learn more.

Send feedback

We're still building out the best experience we can — and we'd love your input. Tell us about features you enjoy, ideas you'd like to see, or pain points where something feels off, and we'll know where to look next.

Type